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 -9a - 9a = -2a + 6x - 8 for a in terms of x.
| -2\(\frac{1}{7}\)x + 1\(\frac{1}{7}\) | |
| -2\(\frac{1}{2}\)x + \(\frac{1}{2}\) | |
| \(\frac{4}{5}\)x - \(\frac{4}{5}\) | |
| \(\frac{3}{16}\)x + \(\frac{5}{16}\) |