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 - 8a = -7a - y - 4 for a in terms of y.
| 2y + 1\(\frac{1}{2}\) | |
| -1\(\frac{5}{7}\)y - 1\(\frac{2}{7}\) | |
| \(\frac{1}{18}\)y + \(\frac{1}{18}\) | |
| 3\(\frac{1}{2}\)y - 2 |