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