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Verified answer
Materi barisanKelompokkan bilangannya sbb
-100 - 99 - 98 - .... - 51 + (-50 + 50) + (-49 + 49) + .... (-1 + 1)
= -100 -99 - .... - 51
= (-100 - 51) + (-99 - 52) + ... + (-76 - 75) = (-151) x 25 = -3775