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