1⼀3+1⼀6+1⼀2= 一又4⼀5-7⼀20-9⼀20= 17⼀20-(3⼀8+1⼀5)= 13⼀17-(5⼀17+1⼀10)+0.9=(全要递等式)

能简便就要简便
2024-12-26 01:21:44
推荐回答(1个)
回答1:

1/3+1/6+1/2
=1/3+1/2-1/3+1/2
=1/2+1/2
=1

一又4/5-7/20-9/20
=1+4/5-(7/20+9/20)
=1+4/5-16/20
=1+4/5-4/5
=1

17/20-(3/8+1/5)
=17/20-(15/40+8/40)
=17/20-23/40
=34/40-23/40
=11/40

13/17-(5/17+1/10)+0.9
=13/17-5/17-1/10+9/10
=8/17+8/10
=8/17+4/5
=40/85+68/85
=108/85