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 -a - 7a = 6a - 9y - 2 for a in terms of y.
| \(\frac{2}{7}\)y + \(\frac{2}{7}\) | |
| -\(\frac{3}{13}\)y - \(\frac{7}{13}\) | |
| -y + \(\frac{5}{11}\) | |
| -3y - 2 |