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 + 8a = -6a - 7z + 2 for a in terms of z.
| 5z - \(\frac{2}{3}\) | |
| 13z - 2 | |
| -z + \(\frac{8}{11}\) | |
| \(\frac{1}{2}\)z + \(\frac{1}{5}\) |