120*(4分之1+6分之1-30分之1)怎样简便怎样算

2025-03-17 20:16:38
推荐回答(3个)
回答1:

=120*1/4+120*1/6-120*1/30=30+20-4=46

回答2:

120*(1/4+1/6-1/30)
=120*(1/4)+120*(1/6)-120*(1/30)
=30+20-4
=46

回答3:

120*(1/4+1/6-1/30)
=30+20-4
=46