\(2x\left(y-3\right)-3\left(3-y\right)\)
\(=2x\left(y-3\right)+3\left(y-3\right)\)
\(=\left(2x+3\right)\left(y-3\right)\)
\(2x\left(y-3\right)-3\left(3-y\right)=2x\left(y-3\right)+3\left(y-3\right)=\left(y-3\right)\left(2x+3\right)\)
\(=2x\left(y-3\right)+3\left(y-3\right)=\left(y-3\right)\left(2x+3\right)\)
2x(y−3)−3(3−y)
=2x(y−3)+3(y-3)
=(2x+3)(y−3)