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Answer :

Cairdego

Answer:

6x-7

Step-by-step explanation:

First add 12x and 6x to get 18x:

(1/3)(18x-21)

Multiply each term by 1/3 = Divide each term by 3

18/3=6 and 21/3=7, so

(1/3)(18x-21)=6x-7

Caroaquillago

Answer:

The correct answer is 6x-7.

Step-by-step explanation:

:)

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