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 5a - 3a = 7a - 4y + 9 for a in terms of y.
| \(\frac{1}{2}\)y - 4\(\frac{1}{2}\) | |
| -\(\frac{6}{11}\)y - \(\frac{7}{11}\) | |
| y + \(\frac{3}{4}\) | |
| 10y - 3 |