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 -9a - 2a = -3a - 9z + 2 for a in terms of z.
| -5z + 2 | |
| \(\frac{1}{2}\)z - 2 | |
| 1\(\frac{1}{6}\)z - \(\frac{1}{3}\) | |
| -\(\frac{1}{3}\)z + 1\(\frac{2}{3}\) |