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 - 7a = -a + 5z + 1 for a in terms of z.
| 3z + \(\frac{1}{4}\) | |
| \(\frac{1}{13}\)z - \(\frac{1}{13}\) | |
| \(\frac{6}{7}\)z - \(\frac{5}{14}\) | |
| -\(\frac{7}{15}\)z + \(\frac{1}{5}\) |