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Pisahkan + dan -
Positif berjumlah 50 bilangan (100/2) dan negatif 50 bilangan (100/2)
Jumlah Seluruh Positif = (1+ 99) × 50/2 = 100 x 25 = 2500
Jumlah Seluruh Negatif = (-2 + -100) × 50/2 = -102 × 25 = -2050
Positif + Negatif = 2500 + -2050 = -50