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