Solve for x
x = \frac{17}{6} = 2\frac{5}{6} \approx 2.833333333
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-8x+80=22x-5
Combine x and -9x to get -8x.
-8x+80-22x=-5
Subtract 22x from both sides.
-30x+80=-5
Combine -8x and -22x to get -30x.
-30x=-5-80
Subtract 80 from both sides.
-30x=-85
Subtract 80 from -5 to get -85.
x=\frac{-85}{-30}
Divide both sides by -30.
x=\frac{17}{6}
Reduce the fraction \frac{-85}{-30} to lowest terms by extracting and canceling out -5.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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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}