Answer
$\frac{5-y}{2}$
Work Step by Step
$\frac{5x+15-xy-3y}{2x+6}$=$\frac{5(x+3)-y(x+3)}{2(x+3)}$=
$\frac{(5-y)(x+3)}{2(x+3)}$=$\frac{5-y}{2}$
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