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23-12-2018
Mathematics

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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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23-12-2018

Answer:

Step-by-step explanation:

Commutative property: 3x+12-2x = 3x-2x+12

Substitution property: 3x-2x+12 = x+12

x+12 = x+12

Subtraction property: x-x+12 = x-x+12

Substitution property: 12 = 12

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