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 -4a + 4a = a - 7x + 9 for a in terms of x.
| \(\frac{3}{10}\)x - \(\frac{9}{10}\) | |
| -1\(\frac{1}{2}\)x + 2 | |
| 2\(\frac{1}{5}\)x - 1\(\frac{4}{5}\) | |
| -8x - 6 |