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 -4a + 9a = 2a - 2z - 8 for a in terms of z.
| -\(\frac{7}{13}\)z - \(\frac{1}{13}\) | |
| -\(\frac{2}{7}\)z - \(\frac{1}{2}\) | |
| 1\(\frac{5}{6}\)z + 1\(\frac{1}{3}\) | |
| 1\(\frac{1}{2}\)z + 2 |