In mathematics, a ratio<span> is a relationship between two numbers indicating how many times the first number contains the second. For example, if a bowl of fruit contains eight oranges and six lemons, then the </span>ratio<span> of oranges to lemons is eight to six (that is, 8:6, which is equivalent to the </span>ratio<span> 4:3\
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hey the answer is y=1.862x−0.138 just took the test!

In both the sets, 3 and m as well as n can be found as common factors.
So,
3mn( m+4n)
Therefore the answer is 3mn (#3)
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I think it'd be better if you gave us some sort of diagram with it?