Solve for x
x=0
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4000000000\left(0\times 2-\frac{x}{200000}\right)=3200000000\left(0\times 3-\frac{x}{80000}\right)
Multiply both sides of the equation by 400000, the least common multiple of 200000,80000.
4000000000\left(0-\frac{x}{200000}\right)=3200000000\left(0\times 3-\frac{x}{80000}\right)
Multiply 0 and 2 to get 0.
4000000000\left(-\frac{x}{200000}\right)=3200000000\left(0\times 3-\frac{x}{80000}\right)
Anything plus zero gives itself.
-20000x=3200000000\left(0\times 3-\frac{x}{80000}\right)
Cancel out 200000, the greatest common factor in 4000000000 and 200000.
-20000x=3200000000\left(0-\frac{x}{80000}\right)
Multiply 0 and 3 to get 0.
-20000x=3200000000\left(-\frac{x}{80000}\right)
Anything plus zero gives itself.
-20000x=-40000x
Cancel out 80000, the greatest common factor in 3200000000 and 80000.
-20000x+40000x=0
Add 40000x to both sides.
20000x=0
Combine -20000x and 40000x to get 20000x.
x=0
Product of two numbers is equal to 0 if at least one of them is 0. Since 20000 is not equal to 0, x must be equal to 0.
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