(-10m4 + 8 - 3m) + (11m3 + 13m + 7m4)
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Step-by-step explanation:
(-10m4+8-3m)+(11m3+13m+7m4)
= -10m4+8-3m+11m3+13m+7m4
=-3m4+11m3+10m+8
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