47.下面哪個式子正確?
(A)180 ÷(12 × 15)=180 ÷ 12 × 15
(B)600 ×(48-28)=600 × 48-28
(C)(123+47)-7=123-(7+47)
(D)(250-56)-64=250-(56+64)
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統計: A(20), B(1), C(17), D(120), E(0) #1403417
統計: A(20), B(1), C(17), D(120), E(0) #1403417