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