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 -5a - 6a = 8a + 7z + 2 for a in terms of z.
| 14z - 5 | |
| -z - \(\frac{2}{13}\) | |
| 1\(\frac{1}{2}\)z + 1 | |
| \(\frac{9}{14}\)z + \(\frac{4}{7}\) |