Question

-7 mn +5, 12 mn+2, 9 mn-8, - 2 mn - 3

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Answer 1

Answer:

-7mn+5+12mn+2+9mn-8+(-2mn-3)

Step-by-step explanation:

-7mn+5+12mn+9mn-8+2mn+3

first we have to arrange in like terms and add the like terms

-7mn+12mn+9mn+2mn+5+3-8

5mn+11mn+8-8

16mn+0

therefore the answer = 16mn