Question

1. $9.2r + 5.514 = 158.234$

Explanation:

Step1: Subtract 5.514 from both sides

To isolate the term with \( r \), we subtract 5.514 from both sides of the equation \( 9.2r + 5.514 = 158.234 \).
\[
9.2r + 5.514 - 5.514 = 158.234 - 5.514
\]
Simplifying both sides, we get:
\[
9.2r = 152.72
\]

Step2: Divide both sides by 9.2

To solve for \( r \), we divide both sides of the equation \( 9.2r = 152.72 \) by 9.2.
\[
r = \frac{152.72}{9.2}
\]
Calculating the right - hand side, we find that \( r = 16.6 \).

Answer:

\( r = 16.6 \)