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\frac{1}{4}-\left(-\frac{3}{4}\right)
Fraction \frac{-3}{4} can be rewritten as -\frac{3}{4} by extracting the negative sign.
\frac{1}{4}+\frac{3}{4}
The opposite of -\frac{3}{4} is \frac{3}{4}.
\frac{1+3}{4}
Since \frac{1}{4} and \frac{3}{4} have the same denominator, add them by adding their numerators.
\frac{4}{4}
Add 1 and 3 to get 4.
1
Divide 4 by 4 to get 1.
Examples
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y = 3x + 4
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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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