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 8a - 9a = -2a - 7z + 6 for a in terms of z.
| -\(\frac{1}{4}\)z - \(\frac{1}{2}\) | |
| -1\(\frac{2}{11}\)z - \(\frac{5}{11}\) | |
| \(\frac{1}{5}\)z + \(\frac{3}{5}\) | |
| 1\(\frac{2}{3}\)z - 1 |