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