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determine wheter 3x+12+x is equivalent to 4(3+x). use properties of operations to justify your answer. please help! answer only if you know!
3x + 12 + x = 4x + 12 becuase 3x and x are like terms so you can add them 4(3 + x) = 12 + 4x because 4 times 3 is 12 and 4 times x is 4x so you add them to get 12 + 4x which can be rearranged to equal 4x + 12 So in short: 3x + 12 +x is equivalent to 4(3+x)
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