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