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 - a = 5a - 5z - 9 for a in terms of z.
| \(\frac{4}{11}\)z + \(\frac{9}{11}\) | |
| 2\(\frac{3}{4}\)z + \(\frac{3}{4}\) | |
| 1\(\frac{1}{5}\)z - \(\frac{2}{5}\) | |
| 2\(\frac{1}{2}\)z - 1\(\frac{1}{2}\) |