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 - 7a = 5a + 9x - 5 for a in terms of x.
| -2x + \(\frac{5}{8}\) | |
| -\(\frac{1}{13}\)x + \(\frac{2}{13}\) | |
| \(\frac{12}{13}\)x + \(\frac{2}{13}\) | |
| \(\frac{1}{2}\)x - \(\frac{7}{8}\) |