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