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 + 5a = -4a + 3z - 9 for a in terms of z.
| -\(\frac{2}{9}\)z - 1 | |
| -\(\frac{11}{18}\)z + \(\frac{1}{6}\) | |
| -\(\frac{1}{2}\)z - 1 | |
| \(\frac{9}{13}\)z - \(\frac{9}{13}\) |