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