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 -a - a = 9a - 3z + 3 for a in terms of z.
| \(\frac{1}{13}\)z - \(\frac{5}{13}\) | |
| -\(\frac{2}{3}\)z - \(\frac{5}{12}\) | |
| \(\frac{1}{5}\)z - \(\frac{3}{10}\) | |
| \(\frac{7}{9}\)z - \(\frac{1}{9}\) |