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 - 9a = -7a - 7x + 2 for a in terms of x.
| \(\frac{1}{5}\)x + \(\frac{1}{5}\) | |
| x - \(\frac{3}{4}\) | |
| \(\frac{7}{8}\)x + \(\frac{1}{4}\) | |
| 1\(\frac{4}{7}\)x + 1\(\frac{2}{7}\) |