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 - 2a = -9a + 5x - 7 for a in terms of x.
| \(\frac{1}{13}\)x - \(\frac{5}{13}\) | |
| x - \(\frac{1}{2}\) | |
| \(\frac{7}{10}\)x - \(\frac{7}{10}\) | |
| 1\(\frac{2}{3}\)x + 1\(\frac{1}{2}\) |