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 -2a - 4a = 3a - 2z - 2 for a in terms of z.
| -5z + 9 | |
| -4z + 4 | |
| -\(\frac{2}{5}\)z + \(\frac{2}{5}\) | |
| -15z - 9 |