计算6/1×7－6/7×13－6/13×19－······-6/97×103.
问题描述：
计算6/1×7－6/7×13－6/13×19－······-6/97×103.
要有算式和答案
答
6/1×7－6/7×13－6/13×19－······-6/97×103
=1-1/7-(1/7-1/13+1/13-1/19+,+1/97-1/103)
=1-1/7-(1/7-1/103)
=1-2/7-1/103
然后只有通分了最小公倍数是多少呢？103*7=721