Well if you are adding you would have 8a+2b subtract you would have -2a+2b
= 4a2 + 2ab 2b2
7 over 7 = 1 Then -2b divided by 1 = -2b
It is 2a-b simplified
It is: b+4 when simplified
Change the order to make it more obvious: 3a - a + 2b + 4b 2a + 6b or 2 (a + 3b).
7(a-2b)-6(a-4b) 7a - 14b - 6a - 24b 7a - 6a - 14b - 24b a - 38b
3a - 2b