15+1/7r=20

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Solution for 15+1/7r=20 equation: 



15+1/7r=20

We move all terms to the left:

15+1/7r-(20)=0



Domain of the equation: 7r!=0

r!=0/7

r!=0

r∈R



We add all the numbers together, and all the variables

1/7r-5=0

We multiply all the terms by the denominator


-5*7r+1=0

Wy multiply elements

-35r+1=0

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

-35r=-1

r=-1/-35

r=1/35

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