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 -3a - 8a = -a + 6z - 7 for a in terms of z.
| \(\frac{2}{9}\)z - \(\frac{5}{9}\) | |
| -2\(\frac{2}{3}\)z - 2\(\frac{1}{3}\) | |
| -7z + 3\(\frac{1}{2}\) | |
| 13z - 4 |