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 - 6a = -4a - 9z + 3 for a in terms of z.
| \(\frac{5}{12}\)z + \(\frac{1}{2}\) | |
| \(\frac{3}{5}\)z - \(\frac{3}{5}\) | |
| -2\(\frac{1}{2}\)z + \(\frac{1}{2}\) | |
| \(\frac{9}{13}\)z - \(\frac{1}{13}\) |