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 + 8a = -8a + 2y - 1 for a in terms of y.
| \(\frac{2}{7}\)y + \(\frac{3}{14}\) | |
| -\(\frac{6}{7}\)y - \(\frac{1}{7}\) | |
| y + \(\frac{1}{4}\) | |
| 10y - 1 |