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 -3a - 6a = 9a + 5z + 8 for a in terms of z.
| -3z + 6 | |
| 10z + 9 | |
| -\(\frac{3}{7}\)z + \(\frac{3}{14}\) | |
| -\(\frac{11}{12}\)z - \(\frac{2}{3}\) |