21=1/2x+6

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Solution for 21=1/2x+6 equation: 



21=1/2x+6

We move all terms to the left:

21-(1/2x+6)=0



Domain of the equation: 2x+6)!=0

x∈R



We get rid of parentheses

-1/2x-6+21=0

We multiply all the terms by the denominator


-6*2x+21*2x-1=0

Wy multiply elements

-12x+42x-1=0

We add all the numbers together, and all the variables

30x-1=0

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

30x=1

x=1/30

x=1/30

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