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 = 8a - 9y - 5 for a in terms of y.
| -\(\frac{2}{7}\)y + \(\frac{3}{7}\) | |
| -\(\frac{1}{13}\)y - \(\frac{6}{13}\) | |
| -7y - 5 | |
| 2\(\frac{3}{5}\)y + 1 |