When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
Solve 8b + 4b = -b + 9y + 9 for b in terms of y.
| -13y + 1 | |
| y - \(\frac{2}{3}\) | |
| \(\frac{5}{9}\)y + 1 | |
| -\(\frac{4}{7}\)y - \(\frac{3}{7}\) |