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 + 9a = 5a + y - 3 for a in terms of y.
| -\(\frac{2}{5}\)y + \(\frac{3}{5}\) | |
| \(\frac{8}{13}\)y + \(\frac{3}{13}\) | |
| -5y + 1 | |
| 4y + 6 |