Factor
\left(4-3m\right)\left(n-r\right)
Evaluate
\left(4-3m\right)\left(n-r\right)
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n\left(-3m+4\right)-r\left(-3m+4\right)
Do the grouping 4n-3nm-4r+3rm=\left(4n-3nm\right)+\left(-4r+3rm\right), and factor out n in the first and -r in the second group.
\left(-3m+4\right)\left(n-r\right)
Factor out common term -3m+4 by using distributive property.
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