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

asked
User Deddy
by
7.4k points

2 Answers

1 vote
18x+9 is the correct answer
answered
User Daniel Gelling
by
8.0k points
7 votes
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 :))
answered
User The Tahaan
by
8.6k points

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