21=1/4x+3

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Solution for 21=1/4x+3 equation: 



21=1/4x+3

We move all terms to the left:

21-(1/4x+3)=0



Domain of the equation: 4x+3)!=0

x∈R



We get rid of parentheses

-1/4x-3+21=0

We multiply all the terms by the denominator


-3*4x+21*4x-1=0

Wy multiply elements

-12x+84x-1=0

We add all the numbers together, and all the variables

72x-1=0

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

72x=1

x=1/72

x=1/72

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