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 + a = -3a + y - 8 for a in terms of y.
| -y + 5 | |
| y + 1\(\frac{1}{3}\) | |
| \(\frac{1}{4}\)y - 1\(\frac{3}{4}\) | |
| -\(\frac{5}{8}\)y - \(\frac{7}{16}\) |