请问7+1/7等于多少?5/12-2/7等于多少?要通分过程。谢谢
1个回答
2012-11-18
展开全部
7+1/7
=(7*7)/7+1/7
=49/7+1/7
=50/7
=7.14 (约等于)
5/12-2/7
=(5*7)/(12*7)-(2*12)/(7*12)
=35/84-24/84
=11/84
=0.13(约等于)
=(7*7)/7+1/7
=49/7+1/7
=50/7
=7.14 (约等于)
5/12-2/7
=(5*7)/(12*7)-(2*12)/(7*12)
=35/84-24/84
=11/84
=0.13(约等于)
追问
谢谢。
追答
呵呵呵..不客气!
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