Question

add : 3mn, – 5mn, 8mn, – 4mn​

Answer 1

Answer:

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Step-by-step explanation:

3mn+(-5mn)+8mn+(-4mn)

(3+8)+(-5+-4)mn

11-9mn

2mn

this is the answer

Answer 2

Answer:

$\huge \: solution$

3mn+(-5mn)+8mn+(-4mn)

(3+8)+(5+4)mn

11-9mn

=>2mn

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