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1/2X1/3+1/3X1/4+1/4X1/5+1/5X1/61/2X1/3+1/3X1/4+1/4X1/5+1/5X1/6简单的计算起来
题目详情
1/2X1/3+1/3X1/4+1/4X1/5+1/5X1/6
1/2X1/3+1/3X1/4+1/4X1/5+1/5X1/6简单的计算起来
1/2X1/3+1/3X1/4+1/4X1/5+1/5X1/6简单的计算起来
▼优质解答
答案和解析
1/2X1/3+1/3X1/4+1/4X1/5+1/5X1/6
=1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6
=1/2-1/6
=1/3
=1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6
=1/2-1/6
=1/3
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