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 + 7a = 5a - 6z - 5 for a in terms of z.
| \(\frac{5}{12}\)z - \(\frac{2}{3}\) | |
| 1\(\frac{3}{10}\)z + \(\frac{1}{2}\) | |
| \(\frac{4}{7}\)z + \(\frac{2}{7}\) | |
| -4z - 2 |