Solve for x
x=\frac{23}{25}=0.92
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5x=5-\frac{2}{5}
Subtract \frac{2}{5} from both sides.
5x=\frac{25}{5}-\frac{2}{5}
Convert 5 to fraction \frac{25}{5}.
5x=\frac{25-2}{5}
Since \frac{25}{5} and \frac{2}{5} have the same denominator, subtract them by subtracting their numerators.
5x=\frac{23}{5}
Subtract 2 from 25 to get 23.
x=\frac{\frac{23}{5}}{5}
Divide both sides by 5.
x=\frac{23}{5\times 5}
Express \frac{\frac{23}{5}}{5} as a single fraction.
x=\frac{23}{25}
Multiply 5 and 5 to get 25.
Examples
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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
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