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 5a - 6a = -7a + 9z + 5 for a in terms of z.
| -\(\frac{6}{7}\)z - \(\frac{1}{7}\) | |
| 1\(\frac{1}{11}\)z + \(\frac{1}{11}\) | |
| \(\frac{8}{11}\)z - \(\frac{4}{11}\) | |
| 1\(\frac{1}{4}\)z + \(\frac{5}{12}\) |