Question

-7mn + 5, 12mn + 2, 9mn - 8,- 2mn - 3
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Answer 1

Answer:

-2mn, 14mn, 1mn, -5mn

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Answer 2

Answer:

12 mn, 14 mn, 1 mn, 5 mn

Step-by-step explanation:

7 mn+5=12mn

12 mn+2=14 mn

9 mn-8= 1 mn

2 mn- 3= 5 mn