Solve for x
x = \frac{28}{25} = 1\frac{3}{25} = 1.12
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5x=\frac{7}{5}\times 4
Multiply both sides by 4.
5x=\frac{7\times 4}{5}
Express \frac{7}{5}\times 4 as a single fraction.
5x=\frac{28}{5}
Multiply 7 and 4 to get 28.
x=\frac{\frac{28}{5}}{5}
Divide both sides by 5.
x=\frac{28}{5\times 5}
Express \frac{\frac{28}{5}}{5} as a single fraction.
x=\frac{28}{25}
Multiply 5 and 5 to get 25.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
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Matrix
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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}