solve for b 3(b-4) = -3

To solve the equation \( 3(b - 4) = -3 \), follow these steps:

1. Distribute the \( 3 \) on the left side:
\[
3b - 12 = -3
\]

2. Add \( 12 \) to both sides to isolate the term with \( b \):
\[
3b - 12 + 12 = -3 + 12
\]
This simplifies to:
\[
3b = 9
\]

3. Divide both sides by \( 3 \) to solve for \( b \):
\[
b = \frac{9}{3} = 3
\]

So, the solution is \( b = 3 \).