1-1/6+1/42+1/56+1/72
=1-1/6+1/6-1/7+1/7-1/8+1/8-1/9
=1-1/9
=8/9
1-1/6+1/42+1/56+1/72等于多少?
1个回答
相关问题
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1\42+1\56+1\72等于多少?
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1/20+1/30+1/42+1/56+1/72等于多少 简便
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2/1+6/1+12/1+20/1+30/1+42/1+56/1+72/1+90/1等于多少
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1－1/6 +1/42 +1/56 +1/72
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1-[1/6]+[1/42]+[1/56]+[1/72]．
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1/2+1/6+1/20+1/30+1/42+1/56+1/72等于几?
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1-[1/6]+[1/42]+[1/56]+[1/72]+[1/90]．
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6/1+12/1+20/1+30/1+42/1+56/1+72/1=?
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1/6+1/12+1/20+1/30+1/42+1/56+1/72
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1/6加1/12加1/20加1/30加1/42加1/56加1/72等于