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2. 7a -11b - 8
35 - 2 = 33
35 + 2 = 37
Jadi bilangan tersebut = 33, 35 dan 37
Jumlah bilangan terkecil dan terbesar = 33 + 37 = 70
2)( 2a + 4b + 3 )- (9a - 7b - 5) = 2a - 9a + 4b + 7b +n3 + 5
= -7a + 11b + 8