8⼀15+1⼀6+7⼀15-3⼀4的简便方法?

2025-02-24 15:24:20
推荐回答(3个)
回答1:

8/15+1/6+7/15-3/4
=8/15+7/15+1/6-3/4
=1+2/12-9/12
=1-7/12
=5/12

回答2:

8/15+1/6+7/15-3/4
=(8/15+7/15)-3/4+1/6
=1-3/4+1/6
=1/4+1/6
=3/12+2/12
=5/12

回答3:

8/15+1/6+7/15-3/4
=(8/15+7/15)+1/6-3/4
=1-3/4+1/6
=1/4+1/6
=3/12+2/12
=5/12