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