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 -4b + 5b = 9b - 3z + 9 for b in terms of z.
| 7\(\frac{1}{2}\)z - 1 | |
| \(\frac{8}{13}\)z - \(\frac{9}{13}\) | |
| -z - 4\(\frac{1}{2}\) | |
| -\(\frac{1}{9}\)z + \(\frac{5}{9}\) |