若a分之a-b=7,则a分之b=
问题描述:
若a分之a-b=7,则a分之b=
答
a分之a-b=7
a/a-b/a=7
1-b/a=7
-b/a=6
b/a=-6
若a分之a-b=7,则a分之b=
a分之a-b=7
a/a-b/a=7
1-b/a=7
-b/a=6
b/a=-6