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