Simplify.
-$\frac{3 m^{2}+3 m}{15 m^{2}+21 m}$
A) $\frac{m^{2}+1}{5 m^{2}+7}$
B) $\frac{m+1}{5 m+7}$
C) $\frac{m+1}{m+7}$
D) $\frac{m+3}{5 m+7}$

Question

Quizplus · Accepted Answer

The expression can be simplified by factoring out common terms. Factor out 3m from the numerator and 3m from the denominator: $\frac{3m(m+1)}{3m(5m+7)}$. Cancel out the common term 3m: $\frac{m+1}{5m+7}$, which matches choice B.

Simplify - 3m2+3m15m2+21m\frac{3 m^{2}+3 m}{15 m^{2}+21 m}15m2+21m3m2+3m​ A) m2+15m2+7\frac{m^{2}+1}{5 m^{2}+7}5m2+7m2+1​ B) m+15m+7\frac{m+1}{5 m+7}5m+7m+1​

Simplify
- $\frac{3 m^{2}+3 m}{15 m^{2}+21 m}$ A) $\frac{m^{2}+1}{5 m^{2}+7}$ B) $\frac{m+1}{5 m+7}$