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 -2a - 6a = 7a - 4y - 1 for a in terms of y.
| -\(\frac{2}{9}\)y + \(\frac{1}{9}\) | |
| y + \(\frac{2}{3}\) | |
| -2y - 1 | |
| 1\(\frac{3}{5}\)y - 1\(\frac{4}{5}\) |