1+4⼀1*4-4+7⼀4*7+7+10⼀7*10-10+13⼀10*13+13+16⼀13*16=几分之几?

1+4/1*4-4+7/4*7+7+10/7*10-10+13/10*13+13+16/13*16
2025-06-22 09:09:39
推荐回答(1个)
回答1:

原式=1+1/4-(1/4+1/7)+(1/7+1/10)-(1/10+1/13)+(1/13+1/16)
=1+1/4-1/4-1/7+1/7+1/10-1/10-1/13+1/13+1/16
=1+1/16
=17/16