Solve for x
x=13
Graph
Share
Copied to clipboard
3\left(x-1\right)-2\left(x+2\right)=6x-72
Multiply both sides of the equation by 6, the least common multiple of 2,3.
3x-3-2\left(x+2\right)=6x-72
Use the distributive property to multiply 3 by x-1.
3x-3-2x-4=6x-72
Use the distributive property to multiply -2 by x+2.
x-3-4=6x-72
Combine 3x and -2x to get x.
x-7=6x-72
Subtract 4 from -3 to get -7.
x-7-6x=-72
Subtract 6x from both sides.
-5x-7=-72
Combine x and -6x to get -5x.
-5x=-72+7
Add 7 to both sides.
-5x=-65
Add -72 and 7 to get -65.
x=\frac{-65}{-5}
Divide both sides by -5.
x=13
Divide -65 by -5 to get 13.
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}