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