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