2/7x+3=21

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Solution for 2/7x+3=21 equation: 



2/7x+3=21

We move all terms to the left:

2/7x+3-(21)=0



Domain of the equation: 7x!=0

x!=0/7

x!=0

x∈R



We add all the numbers together, and all the variables

2/7x-18=0

We multiply all the terms by the denominator


-18*7x+2=0

Wy multiply elements

-126x+2=0

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

-126x=-2

x=-2/-126

x=1/63

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