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2a+6b
2a² + 6a
Add them together: 2a+5a = 7a
It is 2a-b simplified
2a + 3a + 4 = 5a + 4
11a+7b-(3b-2a)
9a + 1
3b -1
2a + 10 + 5a - 2 = (2a + 5a) + (10 - 2) = 7a + 8
5a + 11
2a + 11a - 5a = 8a
2a + 4b