(13steps)
PrintForm
Definitions
Lemmas
int
2
Sections
StandardLIB
Doc
At:
mul
cancel
in
eq
1
2
2
1
1.
a:
2.
b:
3.
n:
4.
m:
. m
a = m
b
a = b
5.
n
a = n
b
6.
n > 0
(-n)
(-a) = (-n)
(-b)
By:
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Generated subgoals:
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About:
(13steps)
PrintForm
Definitions
Lemmas
int
2
Sections
StandardLIB
Doc
m:
. m
a = mb 
a = ba = nb
n > 0
(-n)(-a) = (-n)(-b)
