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 -4a - 7a = 3a + y + 2 for a in terms of y.
| 3y + 3 | |
| \(\frac{1}{7}\)y - \(\frac{3}{14}\) | |
| -1\(\frac{1}{7}\)y - \(\frac{2}{7}\) | |
| -7y + 1\(\frac{1}{2}\) |