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 -4a + 4a = -2a - 9z - 2 for a in terms of z.
| 6\(\frac{1}{2}\)z + 1 | |
| \(\frac{5}{6}\)z + \(\frac{5}{18}\) | |
| 2\(\frac{1}{2}\)z - 2 | |
| z - 1\(\frac{2}{3}\) |