Evaluate
\frac{a}{5}+3
Factor
\frac{a+15}{5}
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\frac{a}{5}+\frac{3\times 5}{5}
To add or subtract expressions, expand them to make their denominators the same. Multiply 3 times \frac{5}{5}.
\frac{a+3\times 5}{5}
Since \frac{a}{5} and \frac{3\times 5}{5} have the same denominator, add them by adding their numerators.
\frac{a+15}{5}
Do the multiplications in a+3\times 5.
\frac{a+15}{5}
Factor out \frac{1}{5}.
Examples
Quadratic equation
{ 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
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