125⼀7=几分之几 简算 1.2-0.5*1.8⼀0.9 8*7*1.25 3分之2+(6分之5-4分之3)⼀8分之3 7分之5⼀9+7分之4*9分之

2024-12-16 14:08:10
推荐回答(1个)
回答1:

125/7=17又7分之6
简算
1.2-0.5*1.8/0.9
=1.2-0.9/0.9
=1.2-1
=0.2

8*7*1.25
=8*1.25*7
=10*7
=70

3分之2+(6分之5-4分之3)/8分之3
=2/3+1/12×8/3
=2/3+2/9
=8/9

7分之5/9+7分之4*9分之1
=(5/7+4/7)*1/9
=1*1/9
=1/9