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 7a - 6a = -5a + 3z - 4 for a in terms of z.
| 2z - 7 | |
| \(\frac{3}{4}\)z - \(\frac{1}{3}\) | |
| \(\frac{1}{6}\)z - \(\frac{5}{6}\) | |
| \(\frac{2}{13}\)z - \(\frac{5}{13}\) |