Penjelasan dengan langkah-langkah:
= 10 + 20 + 30 + 40
= 30 + 30 + 40
= 60 + 40
= 100
10 + 20 + 30 + 40
= ( 10 + 20 ) + 30 + 40
= ( 30 + 30 ) + 40
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Penjelasan dengan langkah-langkah:
= 10 + 20 + 30 + 40
= 30 + 30 + 40
= 60 + 40
= 100
10 + 20 + 30 + 40
= ( 10 + 20 ) + 30 + 40
= ( 30 + 30 ) + 40
= 60 + 40
= 100