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 - 5a = 4a - 5z + 2 for a in terms of z.
| -7z + 9 | |
| \(\frac{1}{17}\)z + \(\frac{7}{17}\) | |
| 6z + 4 | |
| z + 2 |