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 a + 8a = 9a + 4z + 6 for a in terms of z.
| -2z + 7 | |
| 3z + 8 | |
| 1\(\frac{1}{12}\)z + \(\frac{7}{12}\) | |
| \(\frac{1}{2}\)z - \(\frac{3}{4}\) |