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