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 + 7a = 8a - 2y - 8 for a in terms of y.
| \(\frac{9}{10}\)y + \(\frac{4}{5}\) | |
| y - 1 | |
| 1\(\frac{2}{5}\)y + 1 | |
| -\(\frac{2}{13}\)y - \(\frac{3}{13}\) |