2/3x-1/3x=21

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Solution for 2/3x-1/3x=21 equation: 



2/3x-1/3x=21

We move all terms to the left:

2/3x-1/3x-(21)=0



Domain of the equation: 3x!=0

x!=0/3

x!=0

x∈R



We multiply all the terms by the denominator


-21*3x+2-1=0

We add all the numbers together, and all the variables

-21*3x+1=0

Wy multiply elements

-63x+1=0

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

-63x=-1

x=-1/-63

x=1/63

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