7=21x+14

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Solution for 7=21x+14 equation: 



7=21x+14

We move all terms to the left:

7-(21x+14)=0

We get rid of parentheses

-21x-14+7=0

We add all the numbers together, and all the variables

-21x-7=0

We move all terms containing x to the left, all other terms to the right

-21x=7

x=7/-21

x=-1/3

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