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