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