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 -9a - 7a = 5a + 3y + 1 for a in terms of y.
| -\(\frac{8}{9}\)y + \(\frac{2}{9}\) | |
| -\(\frac{7}{8}\)y + \(\frac{1}{8}\) | |
| 2y - 1 | |
| -\(\frac{5}{7}\)y - \(\frac{1}{14}\) |