Evaluate
\frac{z}{2}+3
Factor
\frac{z+6}{2}
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\frac{z}{2}+\frac{3\times 2}{2}
To add or subtract expressions, expand them to make their denominators the same. Multiply 3 times \frac{2}{2}.
\frac{z+3\times 2}{2}
Since \frac{z}{2} and \frac{3\times 2}{2} have the same denominator, add them by adding their numerators.
\frac{z+6}{2}
Do the multiplications in z+3\times 2.
\frac{z+6}{2}
Factor out \frac{1}{2}.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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Matrix
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Simultaneous equation
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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