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Which expression is equivalent to 12 x + 3y - 9 x A. 12x - 6y B. X + y C. 6xy D. 3x + 3y

User Tech MLG
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In this case we have the expression


12x+3y-9x

We can group the terms that are accompanied with x, having the final equivalent expression:


(12-9)x+3y

Remember to be careful with the signs.


3x+3y

Answer: D. 3x+3y

User Roest
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