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 2a - 3a = 3a - 3z - 1 for a in terms of z.
| z + 1 | |
| -\(\frac{1}{2}\)z + 4\(\frac{1}{2}\) | |
| 4z - 8 | |
| -\(\frac{3}{5}\)z - 1\(\frac{1}{5}\) |