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 -5a - 5a = 8a + 4x + 9 for a in terms of x.
| x - \(\frac{7}{9}\) | |
| -\(\frac{1}{4}\)x - \(\frac{1}{2}\) | |
| -\(\frac{9}{13}\)x - \(\frac{9}{13}\) | |
| -1\(\frac{2}{3}\)x + \(\frac{2}{3}\) |