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 4a - 4a = -9a - 7z + 1 for a in terms of z.
| -z - \(\frac{7}{12}\) | |
| -\(\frac{8}{9}\)z - 1 | |
| -\(\frac{2}{11}\)z + \(\frac{5}{11}\) | |
| -\(\frac{3}{13}\)z + \(\frac{1}{13}\) |