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 3a - 4a = 7a - 9y + 1 for a in terms of y.
| 1\(\frac{1}{4}\)y - \(\frac{1}{4}\) | |
| y - \(\frac{1}{14}\) | |
| 2\(\frac{1}{2}\)y - 1\(\frac{3}{4}\) | |
| -\(\frac{1}{2}\)y + \(\frac{1}{6}\) |