Evaluate
\frac{10}{2b-a}
Differentiate w.r.t. b
-\frac{20}{\left(2b-a\right)^{2}}
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\frac{7\left(-1\right)}{a-2b}-\frac{3}{a-2b}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of 2b-a and a-2b is a-2b. Multiply \frac{7}{2b-a} times \frac{-1}{-1}.
\frac{7\left(-1\right)-3}{a-2b}
Since \frac{7\left(-1\right)}{a-2b} and \frac{3}{a-2b} have the same denominator, subtract them by subtracting their numerators.
\frac{-7-3}{a-2b}
Do the multiplications in 7\left(-1\right)-3.
\frac{-10}{a-2b}
Do the calculations in -7-3.
Examples
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y = 3x + 4
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Matrix
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Simultaneous equation
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Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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