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