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Verified answer
Materi PecahanA. (3/4 + 7/10) + 2/5 = (15/20 + 14/20) + 8/20 = 29/20 + 8/20 = 37/20
B. 3/4 + (7/10 + 2/5) = 15/20 + (14/20 + 8/20) = 15/20 + 22/20 = 37/20
Jadi, hasil jawabannya sama.
Sifat yg ditunjukkan: Asosiatif