1/2(x-3)=21

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



1/2(x-3)=21

We move all terms to the left:

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



Domain of the equation: 2(x-3)!=0

x∈R



We multiply all the terms by the denominator


-21*2(x-3)+1=0

Wy multiply elements

-42x(x+1=0

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