Solve for x
x=2
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15x-21-2\left(9x-11\right)=4\left(8x-13\right)-17
Use the distributive property to multiply 3 by 5x-7.
15x-21-18x+22=4\left(8x-13\right)-17
Use the distributive property to multiply -2 by 9x-11.
-3x-21+22=4\left(8x-13\right)-17
Combine 15x and -18x to get -3x.
-3x+1=4\left(8x-13\right)-17
Add -21 and 22 to get 1.
-3x+1=32x-52-17
Use the distributive property to multiply 4 by 8x-13.
-3x+1=32x-69
Subtract 17 from -52 to get -69.
-3x+1-32x=-69
Subtract 32x from both sides.
-35x+1=-69
Combine -3x and -32x to get -35x.
-35x=-69-1
Subtract 1 from both sides.
-35x=-70
Subtract 1 from -69 to get -70.
x=\frac{-70}{-35}
Divide both sides by -35.
x=2
Divide -70 by -35 to get 2.
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y = 3x + 4
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\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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