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 -9a + 9a = 7a + 7x - 4 for a in terms of x.
| \(\frac{1}{8}\)x + \(\frac{1}{4}\) | |
| -\(\frac{11}{13}\)x + \(\frac{4}{13}\) | |
| -4x + 2\(\frac{2}{3}\) | |
| \(\frac{6}{11}\)x - \(\frac{8}{11}\) |