Question

Solve for the value of r

Answer 1

Answer:

$r = 13$

Step-by-step explanation:

$(8r + 5) + (5r + 6) = 180 \\ 13r + 11 = 180 \\ 13r = 180 - 11 \\ 13r = 169 \\ \\ r = \frac{169}{13} \\ \\ r = 13$