solve the equation for M

To solve the equation \(-15 = -4m + 5\) for \(m\), follow these steps:

1. **Subtract 5 from both sides** to isolate the term with \(m\):

\[
-15 - 5 = -4m
\]

This simplifies to:

\[
-20 = -4m
\]

2. **Divide both sides by -4** to solve for \(m\):

\[
m = \frac{-20}{-4}
\]

Simplifying this, we find:

\[
m = 5
\]

So, the solution is \(m = 5\).