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 - 6a = -8a - 4y - 1 for a in terms of y.
| \(\frac{1}{8}\)y - \(\frac{7}{8}\) | |
| \(\frac{2}{7}\)y - 1 | |
| 13y - 2 | |
| \(\frac{2}{7}\)y - \(\frac{1}{7}\) |