April 2019 1 17 Report
Berat badan 5 orang anak berturut turut adalah (5x+7)kg , (3x+5)kg ,(2x+1)kg ,(6x-7)kg, dan (4x-1)kg . Rata rata berat badan mereka 13kg . Tentu kan selisih berat badan mereka antara anak yg paling berat dengan paling ringan?
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