To solve for \( w \), we need to isolate the term containing \( w \) on one side of the equation. Start by subtracting 15.8 from both sides of the equation:
\[
15.8 - 7w - 15.8 = 4.6 - 15.8
\]
This simplifies to:
\[
-7w = -11.2
\]
Step 2: Solve for \( w \)
Next, divide both sides of the equation by \(-7\) to solve for \( w \):