Simplify \: 3a + 7b - 4 - 7a + 6I need to know the answer

Question

`simplify \: 3a + 7b - 4 - 7a + 6`I need to know the answer

Answer 1

3a + 7b - 4 - 7a + 6

To simplify the above, we will first re-arrange

3a - 7a + 7b -4 + 6

-4a + 7b + 2