Solve for x
x=\frac{2}{5}=0.4
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\frac{\frac{14}{5}}{7}=x
Divide both sides by 7.
\frac{14}{5\times 7}=x
Express \frac{\frac{14}{5}}{7} as a single fraction.
\frac{14}{35}=x
Multiply 5 and 7 to get 35.
\frac{2}{5}=x
Reduce the fraction \frac{14}{35} to lowest terms by extracting and canceling out 7.
x=\frac{2}{5}
Swap sides so that all variable terms are on the left hand side.
Examples
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Linear equation
y = 3x + 4
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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
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