11/3×(5/7-2/5)-11/3×5/7+22/3×1/5是乘号
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11/3×(5/7-2/5)-11/3×5/7+22/3×1/5是乘号11/3×(5/7-2/5)-11/3×5/7+22/3×1/5是乘号11/3×(5/7-2/5)-11/3×5/7+22/3×1
11/3×(5/7-2/5)-11/3×5/7+22/3×1/5是乘号
11/3×(5/7-2/5)-11/3×5/7+22/3×1/5
是乘号
11/3×(5/7-2/5)-11/3×5/7+22/3×1/5是乘号
原式
= 11/3×5/7 -11/3×2/5 -11/3×5/7 +2×11/3×1/5
= -11/3×2/5 +11/3×2/5
= 0
~ 满意请采纳,不清楚请追问.
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11/3×(5/7-2/5)-11/3×5/7+22/3×1/5
=11/3×(5/7-2/5-5/7)+22/3×1/5
=11/3×(-2/5)+11/3×2/5
=11/3×(-2/5+2/5)
=0
望采纳
11/3×(5/7-2/5)-11/3×5/7+22/3×1/5
=11/3×(5/7-2/5)-11/3×5/7+11/3×2×1/5
=11/3×(5/7-2/5)-11/3×5/7+11/3×2/5
=11/3×(5/7-2/5-5/7+2/5)
=11/3×[(5/7-5/7)+(2/5--2/5)]
=11/3×0
=0
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