Solve for x
x=-4
Graph
Share
Copied to clipboard
7-\left(-x\right)-1=-2x-6
To find the opposite of -x+1, find the opposite of each term.
6-\left(-x\right)=-2x-6
Subtract 1 from 7 to get 6.
6-\left(-x\right)+2x=-6
Add 2x to both sides.
-\left(-x\right)+2x=-6-6
Subtract 6 from both sides.
-\left(-x\right)+2x=-12
Subtract 6 from -6 to get -12.
x+2x=-12
Multiply -1 and -1 to get 1.
3x=-12
Combine x and 2x to get 3x.
x=\frac{-12}{3}
Divide both sides by 3.
x=-4
Divide -12 by 3 to get -4.
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}