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 -6a - 9a = a + y + 4 for a in terms of y.
| \(\frac{1}{7}\)y + \(\frac{1}{7}\) | |
| -\(\frac{1}{14}\)y + \(\frac{4}{7}\) | |
| -1\(\frac{3}{7}\)y - \(\frac{4}{7}\) | |
| -12y - 5 |