Solve for x
x=-41
Graph
Share
Copied to clipboard
2x-100=8\left(\frac{3x}{4}+8\right)
Multiply both sides of the equation by 4, the least common multiple of 2,4.
2x-100=8\times \frac{3x}{4}+64
Use the distributive property to multiply 8 by \frac{3x}{4}+8.
2x-100=2\times 3x+64
Cancel out 4, the greatest common factor in 8 and 4.
2x-100=6x+64
Multiply 2 and 3 to get 6.
2x-100-6x=64
Subtract 6x from both sides.
-4x-100=64
Combine 2x and -6x to get -4x.
-4x=64+100
Add 100 to both sides.
-4x=164
Add 64 and 100 to get 164.
x=\frac{164}{-4}
Divide both sides by -4.
x=-41
Divide 164 by -4 to get -41.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
Matrix
\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.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}