1/3(7-7x)=21

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Solution for 1/3(7-7x)=21 equation: 



1/3(7-7x)=21

We move all terms to the left:

1/3(7-7x)-(21)=0



Domain of the equation: 3(7-7x)!=0

x∈R



We add all the numbers together, and all the variables

1/3(-7x+7)-21=0

We multiply all the terms by the denominator


-21*3(-7x+7)+1=0

Wy multiply elements

-63x(-+1=0

We use the square of the difference formula

-63x(-1=0

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