Miraculous78 Miraculous78

24-03-2018
Mathematics

contestada

Which expression is equivalent to 21x+9-3x

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daltman006 daltman006

24-03-2018

18x+9 is the correct answer

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TheAakash TheAakash

24-03-2018

You can simplify this expression by combining like terms. You can see that you can subtract 3x from 21x leaving us with (your answer): 18x + 9. You could also factor this to look like 9(2x + 1). Whichever one you prefer :))

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