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 -7a + 9a = -2a - 3z - 8 for a in terms of z.
| 3\(\frac{1}{2}\)z + 4 | |
| 2\(\frac{2}{5}\)z + 1\(\frac{3}{5}\) | |
| \(\frac{1}{6}\)z - \(\frac{1}{2}\) | |
| z + \(\frac{1}{4}\) |