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 -7a + 4a = 5a + 8z - 9 for a in terms of z.
| -\(\frac{1}{3}\)z + \(\frac{3}{4}\) | |
| \(\frac{2}{3}\)z + \(\frac{2}{3}\) | |
| \(\frac{8}{17}\)z - \(\frac{3}{17}\) | |
| -\(\frac{7}{11}\)z - \(\frac{2}{11}\) |