Solve for x
x=\frac{1}{5}=0.2
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-2x+5x-7x+9x=2+4+6-8-3
Combine x and -3x to get -2x.
3x-7x+9x=2+4+6-8-3
Combine -2x and 5x to get 3x.
-4x+9x=2+4+6-8-3
Combine 3x and -7x to get -4x.
5x=2+4+6-8-3
Combine -4x and 9x to get 5x.
5x=6+6-8-3
Add 2 and 4 to get 6.
5x=12-8-3
Add 6 and 6 to get 12.
5x=4-3
Subtract 8 from 12 to get 4.
5x=1
Subtract 3 from 4 to get 1.
x=\frac{1}{5}
Divide both sides by 5.
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}