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 8a - 7a = -2a - 5z + 3 for a in terms of z.
| -z - \(\frac{1}{2}\) | |
| \(\frac{7}{12}\)z + \(\frac{3}{4}\) | |
| \(\frac{1}{5}\)z + \(\frac{3}{10}\) | |
| 3z - 2 |