Answer:
6.6
Step-by-step explanation:
To solve the equation for \( R \) in \( 5R + 31 = 64 \):
1. Subtract 31 from both sides of the equation:
\[ 5R + 31 - 31 = 64 - 31 \]
\[ 5R = 33 \]
2. Divide both sides by 5:
\[ R = \frac{33}{5} \]
\[ R = 6.6 \]
So, \( R = 6.6 \).
