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bil.2 = x +2
bil.3 = x +4
bil. 1+ bil.2 + bil.3 = 78
x + x + 2 + x + 4 = 78
3x + 6 = 78
3x = 78 - 6
3x = 72
x = 72/3
x = 24
bilangan terkecil (1) = x = 24
bilangan terbesar (3) = x + 4 = 24 + 4 = 28
24 + 28 = 52