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 + 4a = -7a + 7y + 9 for a in terms of y.
| \(\frac{1}{2}\)y - 2\(\frac{1}{2}\) | |
| -\(\frac{5}{17}\)y - \(\frac{7}{17}\) | |
| -1\(\frac{4}{9}\)y + 1 | |
| \(\frac{1}{5}\)y + \(\frac{3}{5}\) |