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36 = 2² x 3²
kpk = 2² x 3² x 7
4 x 9 x 7 = 252,
maaf kalo salah
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2. 21 2. 18
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3. 7 2. 9
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3. 3
42= 2×3×7
36= 2²×3³
KPK=2²×3³×7
=4×9×7
=36×7
=252