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 - 9a = 2a - 3x + 7 for a in terms of x.
| x + 1\(\frac{1}{6}\) | |
| -x - 1 | |
| -\(\frac{9}{14}\)x - \(\frac{1}{2}\) | |
| -\(\frac{1}{3}\)x - 1 |