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How i can answer this question?
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5 votes
How i can answer this question?

How i can answer this question?-example-1
User Aksiom
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1 Answer

3 votes

Answer:

A and D

Explanation:


20 r + 60t = 20(r+3t) = 4\cdot 5(r +3t)=4(5r +15t)

User Rickson
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