Penjelasan dengan langkah-langkah:
(3a + 5b + 7c) + (4b + 5a + 3c)
= 3a + 5a + 5b + 4b + 7c + 3c
= 8a + 9b + 10c
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Penjelasan dengan langkah-langkah:
(3a + 5b + 7c) + (4b + 5a + 3c)
= 3a + 5a + 5b + 4b + 7c + 3c
= 8a + 9b + 10c