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 -2a + 3a = -7a - 9x + 9 for a in terms of x.
| \(\frac{1}{4}\)x - \(\frac{3}{4}\) | |
| -2\(\frac{2}{5}\)x + 1\(\frac{4}{5}\) | |
| \(\frac{5}{13}\)x - \(\frac{5}{13}\) | |
| -\(\frac{1}{7}\)x - 1\(\frac{2}{7}\) |