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 + 8a = -5a - 6z - 6 for a in terms of z.
| -1\(\frac{1}{6}\)z - \(\frac{1}{2}\) | |
| -3z - \(\frac{1}{2}\) | |
| -\(\frac{7}{15}\)z + \(\frac{1}{5}\) | |
| 2z - 3\(\frac{1}{2}\) |