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