6=-1/2*x+21

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



6=-1/2x+21

We move all terms to the left:

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



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

x∈R



We get rid of parentheses

1/2x-21+6=0

We multiply all the terms by the denominator


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

Wy multiply elements

-42x+12x+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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