Solve for x
x=15
Graph
Share
Copied to clipboard
15x-40-2\left(2x-6\right)-9x=2
Use the distributive property to multiply 5 by 3x-8.
15x-40-4x+12-9x=2
Use the distributive property to multiply -2 by 2x-6.
11x-40+12-9x=2
Combine 15x and -4x to get 11x.
11x-28-9x=2
Add -40 and 12 to get -28.
2x-28=2
Combine 11x and -9x to get 2x.
2x=2+28
Add 28 to both sides.
2x=30
Add 2 and 28 to get 30.
x=\frac{30}{2}
Divide both sides by 2.
x=15
Divide 30 by 2 to get 15.
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}