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 + 8a = 4a + 4x - 2 for a in terms of x.
| -x + 1\(\frac{1}{8}\) | |
| -\(\frac{3}{5}\)x - \(\frac{4}{5}\) | |
| -\(\frac{1}{13}\)x - \(\frac{3}{13}\) | |
| \(\frac{2}{3}\)x + \(\frac{1}{3}\) |