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 2a + 6a = 9a + 8x - 5 for a in terms of x.
| -\(\frac{2}{7}\)x + \(\frac{5}{7}\) | |
| -\(\frac{4}{13}\)x - \(\frac{4}{13}\) | |
| 5x + 1\(\frac{1}{2}\) | |
| -4x - 6 |