Solve for x
x=-3
Graph
Share
Copied to clipboard
2\left(x-4\right)+3\left(x+1\right)-6x=7+3x
Multiply both sides of the equation by 6, the least common multiple of 3,2,6.
2x-8+3\left(x+1\right)-6x=7+3x
Use the distributive property to multiply 2 by x-4.
2x-8+3x+3-6x=7+3x
Use the distributive property to multiply 3 by x+1.
5x-8+3-6x=7+3x
Combine 2x and 3x to get 5x.
5x-5-6x=7+3x
Add -8 and 3 to get -5.
-x-5=7+3x
Combine 5x and -6x to get -x.
-x-5-3x=7
Subtract 3x from both sides.
-4x-5=7
Combine -x and -3x to get -4x.
-4x=7+5
Add 5 to both sides.
-4x=12
Add 7 and 5 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}