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