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 6a + 6a = 5a - 9z - 9 for a in terms of z.
| -z - \(\frac{1}{11}\) | |
| -15z - 9 | |
| 2\(\frac{1}{5}\)z + \(\frac{4}{5}\) | |
| z + \(\frac{1}{2}\) |