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 + 8a = -6a - 9z + 2 for a in terms of z.
| -\(\frac{8}{11}\)z - \(\frac{2}{11}\) | |
| \(\frac{5}{18}\)z - \(\frac{7}{18}\) | |
| -8\(\frac{1}{2}\)z + 1 | |
| z + \(\frac{2}{5}\) |