Solve for x
x=-3
Graph
Share
Copied to clipboard
6+2x=6\left(3+x\right)
Use the distributive property to multiply 2 by 3+x.
6+2x=18+6x
Use the distributive property to multiply 6 by 3+x.
6+2x-6x=18
Subtract 6x from both sides.
6-4x=18
Combine 2x and -6x to get -4x.
-4x=18-6
Subtract 6 from both sides.
-4x=12
Subtract 6 from 18 to get 12.
x=\frac{12}{-4}
Divide both sides by -4.
x=-3
Divide 12 by -4 to get -3.
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}