Solve for x
x=2.8
Graph
Share
Copied to clipboard
8.7x-21.88=0.2x+1.92
Use the distributive property to multiply 0.2 by x+9.6.
8.7x-21.88-0.2x=1.92
Subtract 0.2x from both sides.
8.5x-21.88=1.92
Combine 8.7x and -0.2x to get 8.5x.
8.5x=1.92+21.88
Add 21.88 to both sides.
8.5x=23.8
Add 1.92 and 21.88 to get 23.8.
x=\frac{23.8}{8.5}
Divide both sides by 8.5.
x=\frac{238}{85}
Expand \frac{23.8}{8.5} by multiplying both numerator and the denominator by 10.
x=\frac{14}{5}
Reduce the fraction \frac{238}{85} to lowest terms by extracting and canceling out 17.
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}