3m-(2n-(mn-(m-n+mn)+mn)+n)-m
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3m-(2n-(mn-(m-n+mn)+mn)+n)-m
=3n-(2n-(mn-m+n-mn+mn)+n)-m
=3n-(2n-(-m+n+mn)+n)-m
=3n-(2n+m-n-mn+n)-m
=3n-(2n+m-mn)-m
=3n-2n-m+mn-m
=n-2m+mn
=3n-(2n-(mn-m+n-mn+mn)+n)-m
=3n-(2n-(-m+n+mn)+n)-m
=3n-(2n+m-n-mn+n)-m
=3n-(2n+m-mn)-m
=3n-2n-m+mn-m
=n-2m+mn
Answered by
2
Answer:
3m-(2n-(mn-(m-n+mn)+mn)+n)-m
=3n-(2n-(mn-m+n-mn+mn)+n)-m
=3n-(2n-(-m+n+mn)+n)-m
=3n-(2n+m-n-mn+n)-m
=3n-(2n+m-mn)-m
=3n-2n-m+mn-m
=n-2m+mn
Step-by-step explanation:
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