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945=\frac{1000x\left(1-\frac{476837158203125000000000000000000000000000000000000000000}{1131337517030036595575682282995201117819453812281695834921}\right)}{0.042}+\frac{1000}{1.042^{21}}
Calculate 1.042 to the power of -21 and get \frac{476837158203125000000000000000000000000000000000000000000}{1131337517030036595575682282995201117819453812281695834921}.
945=\frac{1000x\times \frac{654500358826911595575682282995201117819453812281695834921}{1131337517030036595575682282995201117819453812281695834921}}{0.042}+\frac{1000}{1.042^{21}}
Subtract \frac{476837158203125000000000000000000000000000000000000000000}{1131337517030036595575682282995201117819453812281695834921} from 1 to get \frac{654500358826911595575682282995201117819453812281695834921}{1131337517030036595575682282995201117819453812281695834921}.
945=\frac{\frac{654500358826911595575682282995201117819453812281695834921000}{1131337517030036595575682282995201117819453812281695834921}x}{0.042}+\frac{1000}{1.042^{21}}
Multiply 1000 and \frac{654500358826911595575682282995201117819453812281695834921}{1131337517030036595575682282995201117819453812281695834921} to get \frac{654500358826911595575682282995201117819453812281695834921000}{1131337517030036595575682282995201117819453812281695834921}.
945=\frac{15583341876831228466087673404647645662367947911468948450500000}{1131337517030036595575682282995201117819453812281695834921}x+\frac{1000}{1.042^{21}}
Divide \frac{654500358826911595575682282995201117819453812281695834921000}{1131337517030036595575682282995201117819453812281695834921}x by 0.042 to get \frac{15583341876831228466087673404647645662367947911468948450500000}{1131337517030036595575682282995201117819453812281695834921}x.
945=\frac{15583341876831228466087673404647645662367947911468948450500000}{1131337517030036595575682282995201117819453812281695834921}x+\frac{1000}{2.372586736514575306484733251147952014637303201334182983596244992}
Calculate 1.042 to the power of 21 and get 2.372586736514575306484733251147952014637303201334182983596244992.
945=\frac{15583341876831228466087673404647645662367947911468948450500000}{1131337517030036595575682282995201117819453812281695834921}x+\frac{1000000000000000000000000000000000000000000000000000000000000000000}{2372586736514575306484733251147952014637303201334182983596244992}
Expand \frac{1000}{2.372586736514575306484733251147952014637303201334182983596244992} by multiplying both numerator and the denominator by 1000000000000000000000000000000000000000000000000000000000000000.
945=\frac{15583341876831228466087673404647645662367947911468948450500000}{1131337517030036595575682282995201117819453812281695834921}x+\frac{476837158203125000000000000000000000000000000000000000000000}{1131337517030036595575682282995201117819453812281695834921}
Reduce the fraction \frac{1000000000000000000000000000000000000000000000000000000000000000000}{2372586736514575306484733251147952014637303201334182983596244992} to lowest terms by extracting and canceling out 2097152.
\frac{15583341876831228466087673404647645662367947911468948450500000}{1131337517030036595575682282995201117819453812281695834921}x+\frac{476837158203125000000000000000000000000000000000000000000000}{1131337517030036595575682282995201117819453812281695834921}=945
Swap sides so that all variable terms are on the left hand side.
\frac{15583341876831228466087673404647645662367947911468948450500000}{1131337517030036595575682282995201117819453812281695834921}x=945-\frac{476837158203125000000000000000000000000000000000000000000000}{1131337517030036595575682282995201117819453812281695834921}
Subtract \frac{476837158203125000000000000000000000000000000000000000000000}{1131337517030036595575682282995201117819453812281695834921} from both sides.
\frac{15583341876831228466087673404647645662367947911468948450500000}{1131337517030036595575682282995201117819453812281695834921}x=\frac{592276795390259582819019757430465056339383852606202564000345}{1131337517030036595575682282995201117819453812281695834921}
Subtract \frac{476837158203125000000000000000000000000000000000000000000000}{1131337517030036595575682282995201117819453812281695834921} from 945 to get \frac{592276795390259582819019757430465056339383852606202564000345}{1131337517030036595575682282995201117819453812281695834921}.
x=\frac{\frac{592276795390259582819019757430465056339383852606202564000345}{1131337517030036595575682282995201117819453812281695834921}}{\frac{15583341876831228466087673404647645662367947911468948450500000}{1131337517030036595575682282995201117819453812281695834921}}
Divide both sides by \frac{15583341876831228466087673404647645662367947911468948450500000}{1131337517030036595575682282995201117819453812281695834921}.
x=\frac{592276795390259582819019757430465056339383852606202564000345}{1131337517030036595575682282995201117819453812281695834921\times \frac{15583341876831228466087673404647645662367947911468948450500000}{1131337517030036595575682282995201117819453812281695834921}}
Express \frac{\frac{592276795390259582819019757430465056339383852606202564000345}{1131337517030036595575682282995201117819453812281695834921}}{\frac{15583341876831228466087673404647645662367947911468948450500000}{1131337517030036595575682282995201117819453812281695834921}} as a single fraction.
x=\frac{592276795390259582819019757430465056339383852606202564000345}{15583341876831228466087673404647645662367947911468948450500000}
Multiply 1131337517030036595575682282995201117819453812281695834921 and \frac{15583341876831228466087673404647645662367947911468948450500000}{1131337517030036595575682282995201117819453812281695834921} to get 15583341876831228466087673404647645662367947911468948450500000.
x=\frac{118455359078051916563803951486093011267876770521240512800069}{3116668375366245693217534680929529132473589582293789690100000}
Reduce the fraction \frac{592276795390259582819019757430465056339383852606202564000345}{15583341876831228466087673404647645662367947911468948450500000} to lowest terms by extracting and canceling out 5.