1/2x+21=80

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Solution for 1/2x+21=80 equation: 



1/2x+21=80

We move all terms to the left:

1/2x+21-(80)=0



Domain of the equation: 2x!=0

x!=0/2

x!=0

x∈R



We add all the numbers together, and all the variables

1/2x-59=0

We multiply all the terms by the denominator


-59*2x+1=0

Wy multiply elements

-118x+1=0

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

-118x=-1

x=-1/-118

x=1/118

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