(3steps)
PrintForm
Definitions
Lemmas
int
2
Sections
StandardLIB
Doc
At:
add
cancel
in
le
a,b,n:
. a+n
b+n
a
b
By:
UnivFmlaCD []
Generated subgoal:
1
1.
a:
2.
b:
3.
n:
4.
a+n
b+n
a
b
About:
(3steps)
PrintForm
Definitions
Lemmas
int
2
Sections
StandardLIB
Doc
b+n
ab 
a,b,n:. a+nb+n 
abb+n ab
