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