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