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