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