1.15/(-4)=15*_______2.-3/7/(-3/5)=-3/7*________3.-3/(-1/2)=-3*_________=3*_________/=除*=乘

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1.15/(-4)=15*_______2.-3/7/(-3/5)=-3/7*________3.-3/(-1/2)=-3*_________=3*_________/=除*=乘
1.15/(-4)=15*_______
2.-3/7/(-3/5)=-3/7*________
3.-3/(-1/2)=-3*_________=3*_________
/=除
*=乘

1.15/(-4)=15*_______2.-3/7/(-3/5)=-3/7*________3.-3/(-1/2)=-3*_________=3*_________/=除*=乘
楼上错了
1.-1/4
2.-5/3
3.-2 ,2

(1)=4
(2)=-3/5
(3)=1,-1