Directions:Subtract and simplify.

Problem: m+9/(m+3)-(-4m-6)/(m+3)
Choices:
a.5 b.-3 c.-3(m-1)/(m+3) d.m-1/m+3
What I Think: I think it is letter d.

(m+9)/(m+3)-(-4m-6)/(m+3)
= (5m+15)/(m+3)
=5(m+3)/(m+3) = ?

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