1/2(x+21)=-6

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



1/2(x+21)=-6

We move all terms to the left:

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



Domain of the equation: 2(x+21)!=0

x∈R



We add all the numbers together, and all the variables

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

We multiply all the terms by the denominator


6*2(x+21)+1=0

Wy multiply elements

12x(x+1=0

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