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 + 3a = a + 9z + 2 for a in terms of z.
| -\(\frac{3}{11}\)z - \(\frac{2}{11}\) | |
| -\(\frac{5}{9}\)z - \(\frac{8}{9}\) | |
| -2\(\frac{1}{2}\)z + 2 | |
| -3z - 1 |