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 + 7a = 9a - 9y - 5 for a in terms of y.
| -\(\frac{1}{2}\)y - \(\frac{7}{12}\) | |
| 2y + \(\frac{5}{8}\) | |
| 3\(\frac{1}{3}\)y - \(\frac{2}{3}\) | |
| \(\frac{1}{2}\)y - \(\frac{1}{2}\) |