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 5a - 8a = 4a + 7z + 2 for a in terms of z.
| \(\frac{1}{6}\)z + \(\frac{1}{4}\) | |
| -\(\frac{3}{4}\)z + \(\frac{1}{4}\) | |
| 15z + 2 | |
| -1\(\frac{1}{8}\)z - 1\(\frac{1}{8}\) |