-1/2(4x-12)=3x+21

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Solution for -1/2(4x-12)=3x+21 equation: 



-1/2(4x-12)=3x+21

We move all terms to the left:

-1/2(4x-12)-(3x+21)=0



Domain of the equation: 2(4x-12)!=0

x∈R



We get rid of parentheses

-1/2(4x-12)-3x-21=0

We multiply all the terms by the denominator


-3x*2(4x-12)-21*2(4x-12)-1=0

Wy multiply elements

-6x^2(4-42x(4-1=0

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