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 - 7a = 9a - 7x - 4 for a in terms of x.
| x + \(\frac{4}{7}\) | |
| -3x - \(\frac{2}{5}\) | |
| 4x + 1\(\frac{1}{3}\) | |
| -1\(\frac{3}{10}\)x - \(\frac{1}{10}\) |