Solve for x
x = -\frac{75}{8} = -9\frac{3}{8} = -9.375
Graph
Share
Copied to clipboard
-75+8x=6x-10\left(-x\right)
Multiply 5 and -15 to get -75.
-75+8x+10\left(-x\right)=6x
Add 10\left(-x\right) to both sides.
-75+8x+10\left(-x\right)-6x=0
Subtract 6x from both sides.
-75+2x+10\left(-x\right)=0
Combine 8x and -6x to get 2x.
2x+10\left(-x\right)=75
Add 75 to both sides. Anything plus zero gives itself.
2x-10x=75
Multiply 10 and -1 to get -10.
-8x=75
Combine 2x and -10x to get -8x.
x=\frac{75}{-8}
Divide both sides by -8.
x=-\frac{75}{8}
Fraction \frac{75}{-8} can be rewritten as -\frac{75}{8} by extracting the negative sign.
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}