(5.75-2又六分之五)×1又七分之三除以(2.5+1又八分之二) 简算

2025-05-08 16:33:58
推荐回答(1个)
回答1:

解:原式= (5-2 + 3/4 - 5/6) × (10/7) ÷ (5/2 + 5/4) ←(带分数化简)
= (3 + 9/12 - 10/12) × (10/7) ÷ 5 ÷ (2/4 + 1/4) ←(通分)
= (3 - 1/12) × (2/7) × (4/3)
= (35/12) × (2/7) × (4/3) ←(约分)
= 10/9
= 1又9分之1