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 -a - 2a = 6a + 3z + 4 for a in terms of z.
| -1\(\frac{1}{2}\)z - 1 | |
| \(\frac{1}{4}\)z + 1\(\frac{1}{2}\) | |
| -\(\frac{3}{17}\)z - \(\frac{2}{17}\) | |
| -\(\frac{5}{7}\)z - \(\frac{4}{7}\) |