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 = -2a + 7y + 8 for a in terms of y.
| \(\frac{2}{13}\)y - \(\frac{6}{13}\) | |
| -y + 8 | |
| 1\(\frac{3}{7}\)y - 1\(\frac{1}{7}\) | |
| -\(\frac{1}{4}\)y - 1 |