14x+7x=21x-7x

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Solution for 14x+7x=21x-7x equation: 



14x+7x=21x-7x

We move all terms to the left:

14x+7x-(21x-7x)=0

We add all the numbers together, and all the variables

14x+7x-(+14x)=0

We add all the numbers together, and all the variables

21x-(+14x)=0

We get rid of parentheses

21x-14x=0

We add all the numbers together, and all the variables

7x=0

x=0/7

x=0

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