Simplify the expression. −m−[m+{m+n−2m−(2m−3n)}−7]
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Answer:
-m-[m+(m+n-2m-2m+3n)-7]
-m-[m+(m-4m+4n)-7]
-m-[m-3m+4n-7]
-m-[-2m+4n-7]
-m+2m-4n+7
m -4n +7
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