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 + 4a = -6a + 5z + 3 for a in terms of z.
| z - 4 | |
| 4\(\frac{1}{2}\)z - \(\frac{1}{2}\) | |
| \(\frac{1}{11}\)z + \(\frac{3}{11}\) | |
| \(\frac{1}{5}\)z + \(\frac{4}{5}\) |