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 = 3a - 2z - 8 for a in terms of z.
| \(\frac{4}{11}\)z + \(\frac{3}{11}\) | |
| -\(\frac{1}{12}\)z + \(\frac{2}{3}\) | |
| -13z - 4 | |
| -7z + 2\(\frac{1}{2}\) |