1/2r+7=12

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Solution for 1/2r+7=12 equation: 



1/2r+7=12

We move all terms to the left:

1/2r+7-(12)=0



Domain of the equation: 2r!=0

r!=0/2

r!=0

r∈R



We add all the numbers together, and all the variables

1/2r-5=0

We multiply all the terms by the denominator


-5*2r+1=0

Wy multiply elements

-10r+1=0

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

-10r=-1

r=-1/-10

r=1/10

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