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 8a + a = -a - 4y + 6 for a in terms of y.
| 6\(\frac{1}{2}\)y + 3\(\frac{1}{2}\) | |
| -\(\frac{5}{9}\)y + \(\frac{2}{3}\) | |
| 2y - 6 | |
| -1\(\frac{2}{3}\)y - \(\frac{2}{3}\) |