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Hi. I pretty much have the answer for these problems that I worked out just need to know if there right. Thank you all!

16ã27 + 7ã108 = 90ã3

16ã9ã3 + 7ã36ã3

16 . 3ã3 + 7 . 6ã3

(48 +42)ã3
90ã3;

And

ã600x^4 = ã100 . ãx^2 . ã6 = 10x^2ã6

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