Verified Answer :

\((43x+62y)+(34x-25y)\ \ \ \ |use\ Commutative\ and\ Associative\ property\\\\=(43x+34x)+(62y-25y)\\\\=\boxed{77x+37y\to\boxed{D}}\)

\(Commutative\ property:a+b=b+a\\\\Associative\ property:(a+b)+c=a+(b+c)\)

eu99li

(43x+62y)+(34x-25y)=
43x+62y+34x-25y=
43x+34x+62y-25y=
77x+37y
The answer is D.

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