Solve for x
x=10
Graph
Share
Copied to clipboard
2220+40x=1500+120x-80
Subtract 80 from 2300 to get 2220.
2220+40x=1420+120x
Subtract 80 from 1500 to get 1420.
2220+40x-120x=1420
Subtract 120x from both sides.
2220-80x=1420
Combine 40x and -120x to get -80x.
-80x=1420-2220
Subtract 2220 from both sides.
-80x=-800
Subtract 2220 from 1420 to get -800.
x=\frac{-800}{-80}
Divide both sides by -80.
x=10
Divide -800 by -80 to get 10.
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}