Add. Simplify, if possible.
-$\frac{5}{r}+\frac{9}{r-7}$
A) $\frac{14 r-35}{r(7-r)}$
B) $\frac{14 \mathrm{r}-35}{\mathrm{r}(\mathrm{r}-7)}$
C) $\frac{35 r-14}{r(r-7)}$
D) $\frac{35 r-14}{r(7-r)}$

Question

Quizplus · Accepted Answer

To add the fractions $\frac{5}{r}+\frac{9}{r-7}$, find a common denominator, which is $r(r-7)$. The numerator becomes $5(r-7)+9r$, simplifying to $14r-35$, making the answer $\frac{14r-35}{r(r-7)}$.

Add Simplify, If Possible 5r+9r−7\frac{5}{r}+\frac{9}{r-7}r5​+r−79​ A) 14r−35r(7−r)\frac{14 r-35}{r(7-r)}r(7−r)14r−35​ B) 14r−35r(r−7)\frac{14 \mathrm{r}-35}{\mathrm{r}(\mathrm{r}-7)}r(r−7)14r−35​ C) 35r−14r(r−7)\frac{35 r-14}{r(r-7)}r(r−7)35r−14​

Add Simplify, If Possible $\frac{5}{r}+\frac{9}{r-7}$ A) $\frac{14 r-35}{r(7-r)}$ B) $\frac{14 \mathrm{r}-35}{\mathrm{r}(\mathrm{r}-7)}$ C) $\frac{35 r-14}{r(r-7)}$