用7/8,18/11,7/12,13/9,5/12,1/8,7/11,4/9组成4个结果是1的式子
问题描述:
用7/8,18/11,7/12,13/9,5/12,1/8,7/11,4/9组成4个结果是1的式子
答
7/8+1/8,7/12+5/12 18/11-7/11 13/9-4/9
用7/8,18/11,7/12,13/9,5/12,1/8,7/11,4/9组成4个结果是1的式子
7/8+1/8,7/12+5/12 18/11-7/11 13/9-4/9