Write the number in standard form use comma as needed

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.

6(2x + 5y)6 (2x) = 12x6 (5y) = 30y12x + 30y

Here are the answers to the ones that i could see.

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