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 3a - 4a = 8a + 3z - 2 for a in terms of z.
| 3z - 2\(\frac{1}{3}\) | |
| -1\(\frac{2}{5}\)z + \(\frac{2}{5}\) | |
| 2\(\frac{1}{2}\)z - \(\frac{1}{2}\) | |
| -\(\frac{3}{10}\)z + \(\frac{9}{10}\) |