Have all the terms containing the variable on one side of the equation and the rest of the terms on the other side of the equation.
I will put all terms containing the variable b on the left side of the equation and the rest on the right side of the equation.
Subtract 8b from both sides of the equation.
-9 -12b = 3
Add 9 to both sides of the equation to isolate the term with the variable b.
-12b = 12
Divide both sides of the equation by -12 to solve for b.
b = -1