Add : -7mn, 5, 12mn, -2, 9mn, 8
Answers
Answered by
5
Answer:
14mn+13
here us your answer
hope it help
Answered by
17
Answer:
-7mn + 5 + 12mn + (-2) + 9mn + 8
*open brackets
-7mn + 5 + 12mn - 2 + 9mn + 8
*Make simple brackets
[-7mn + 12mn + 9mn] + [5 + 8 -2]
Add all
14mn + 11
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