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 + 2a = 2a - z - 1 for a in terms of z.
| -\(\frac{7}{12}\)z - \(\frac{5}{12}\) | |
| -\(\frac{1}{2}\)z - \(\frac{1}{6}\) | |
| 3\(\frac{3}{4}\)z + 2 | |
| -3z + 2 |