Теңдік тура болатындай етіп,жақшалар қойындар
1)m-n-m=-n
2)m+n-m+n=0
3)m+n+m-n=2m
4)m+n-m-n=2n
1)m-n-m=-n
2)m+n-m+n=0
3)m+n+m-n=2m
4)m+n-m-n=2n
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Answers & Comments
(m+n)-(m+n)=0
(m+n)+(m-n)=2m
(m+n)-(m-n)=2n