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 = 5a - 8z - 2 for a in terms of z.
| -1\(\frac{1}{3}\)z - 1\(\frac{2}{3}\) | |
| \(\frac{3}{13}\)z + \(\frac{7}{13}\) | |
| 2z + 1 | |
| z - 2 |