Question

plz help
Add :-
-7mn+5,12mn+2,9mn-8,-2mn-3 plz. help me plz and answer right
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Answer 1

Answer:

-7mn+5

12mn+2

9mn-8

-2mn-3

adding them we get 12mn-4

Answer 2

Step-by-step explanation:

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

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

12mn-4

please mark me brainliest