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 -7a - 9a = a + 8x - 9 for a in terms of x.
| -\(\frac{5}{9}\)x + \(\frac{2}{9}\) | |
| -\(\frac{1}{11}\)x + \(\frac{6}{11}\) | |
| -\(\frac{7}{10}\)x + \(\frac{3}{10}\) | |
| -2\(\frac{1}{8}\)x + 1\(\frac{1}{8}\) |