(5/6-3/4)÷3/105/9x((3/7-1/14)7/9)
1个回答
=(10/12一9 /12)÷3/10
=1/12X10/3
=5/18
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6-2 3 5 = 18 9 13 ÷9= 5.6× 4 7 = 1 3 + 1 6 = 8÷ 4 7 = 4 5 ÷0