7=1/5r+2

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Solution for 7=1/5r+2 equation: 



7=1/5r+2

We move all terms to the left:

7-(1/5r+2)=0



Domain of the equation: 5r+2)!=0

r∈R



We get rid of parentheses

-1/5r-2+7=0

We multiply all the terms by the denominator


-2*5r+7*5r-1=0

Wy multiply elements

-10r+35r-1=0

We add all the numbers together, and all the variables

25r-1=0

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

25r=1

r=1/25

r=1/25

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