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 - 3a = 2a - 2z - 7 for a in terms of z.
| -z - \(\frac{5}{14}\) | |
| -1\(\frac{1}{2}\)z - 3\(\frac{1}{2}\) | |
| -\(\frac{1}{11}\)z + \(\frac{7}{11}\) | |
| -4z - 9 |