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 -4a - 2a = 6a + 7z + 6 for a in terms of z.
| z + 7 | |
| -\(\frac{9}{10}\)z - \(\frac{3}{5}\) | |
| -2z - 4 | |
| -\(\frac{1}{6}\)z - \(\frac{1}{12}\) |