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