1/2r-4=20*

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Solution for 1/2r-4=20* equation: 



1/2r-4=20*

We move all terms to the left:

1/2r-4-(20*)=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-4-0=0

We add all the numbers together, and all the variables

1/2r-4=0

We multiply all the terms by the denominator


-4*2r+1=0

Wy multiply elements

-8r+1=0

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

-8r=-1

r=-1/-8

r=1/8

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