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Is 3x + 12 - 2x equivalent to x + 12? Use two properties of operations to justify your answer.
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Is 3x + 12 - 2x equivalent to x + 12? Use two properties of operations to justify your answer.

User SunnySun
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3x+12-2x=x+12
3x-2x+12=x+12
1x+12=x+12
x+12=x+12

treu
User Hoetz
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