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b) 8b - (3b-5) = 8b - 3b + 5 = 5b +5
c) (2a+3b) + (5a + 3b)= 2a+3b+5a+3b = 7a+6b
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b) 8b - 3b + 5 = 5b + 5
c) 2a + 3b + 5a + 3b = 7a + 6b