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 - 4a = a + 5z - 1 for a in terms of z.
| -1\(\frac{1}{2}\)z + \(\frac{1}{6}\) | |
| -\(\frac{7}{11}\)z + \(\frac{4}{11}\) | |
| \(\frac{2}{7}\)z + 1\(\frac{2}{7}\) | |
| 2\(\frac{1}{5}\)z - \(\frac{4}{5}\) |