3⼀8(3⼀4--1⼀8)= (能简便的要简便) 12--11⼀15×8⼀45×15⼀11

2024-11-02 14:27:42
推荐回答(2个)
回答(1):

3/8+(3/4--1/8)=
=3/8+1/8+3/4
=1/4+3/4
=1
12--11/15×8/45×15/11=
=11-11/15*15/11*8/45
=11-8/45
=10又37/45

3/11÷4/7+8/11×7/4
=3/11*7/4+8/11*7/4
=7/4*(3/11+8/11)
=7/4*1
=7/4

回答(2):

第一题3/4通分等于6/8