2/5*7+4/7*11+6/16*22+3/2*5+5/11*16+7/22*29+1/29
问题描述:
2/5*7+4/7*11+6/16*22+3/2*5+5/11*16+7/22*29+1/29
答
2/5*7+4/7*11+6/16*22+3/2*5+5/11*16+7/22*29+1/29
=(1/5-1/7)+(1/7-1/11)+(1/16-1/22)+(1/2-1/5)+(1/11-1/16)+(1/22-1/29)+1/29
=1/2