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 -6a - 2a = 7a - 5y - 4 for a in terms of y.
| -2y + 1\(\frac{1}{2}\) | |
| \(\frac{3}{13}\)y + \(\frac{4}{13}\) | |
| 1\(\frac{2}{3}\)y + 1\(\frac{1}{2}\) | |
| -3y + 7 |