3⼀8-1⼀6+5⼀12简便1⼀6+7⼀8+5⼀6+1⼀8简便2⼀7+(3⼀4+5⼀7)简便?

2024-11-23 11:53:39
推荐回答(1个)
回答1:

原式=3/8+7/8+1/8+1/6-1/6+2/7+5/7+5/12+5/6+3/4
=3/8+1+1+(5+10+9)/12
=2+3/8+24/12
=4+3/8
=4又3/8