Question

8
\frac{3}{4}r + 2r + \frac{1}{2}r

Explanation:

Step1: Convert to common denominator

Rewrite terms with denominator 4:
$\frac{3}{4}r + \frac{8}{4}r + \frac{2}{4}r$

Step2: Add the numerators

Sum the coefficients over the common denominator:
$\frac{3 + 8 + 2}{4}r = \frac{13}{4}r$

Answer:

$\frac{13}{4}r$