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