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 + 8a = 2a - 4x + 7 for a in terms of x.
| -2\(\frac{2}{5}\)x + 1\(\frac{2}{5}\) | |
| 14x + 3 | |
| 6\(\frac{1}{2}\)x - 3 | |
| -\(\frac{4}{5}\)x - 1\(\frac{2}{5}\) |