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