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 = 4a - 4y - 3 for a in terms of y.
| y - 3 | |
| -\(\frac{1}{5}\)y + \(\frac{1}{15}\) | |
| -1\(\frac{2}{3}\)y + 2\(\frac{2}{3}\) | |
| -10y + 5 |