Evaluate
\frac{45y}{56x}
Differentiate w.r.t. x
-\frac{45y}{56x^{2}}
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\frac{5\left(-9\right)y}{-7x\times 8}
Multiply \frac{5}{-7x} times \frac{-9y}{8} by multiplying numerator times numerator and denominator times denominator.
\frac{-45y}{-7x\times 8}
Multiply 5 and -9 to get -45.
\frac{-45y}{-56x}
Multiply -7 and 8 to get -56.
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