R/r+2=4/5

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Solution for R/r+2=4/5 equation: 



/R+2=4/5

We move all terms to the left:

/R+2-(4/5)=0



Domain of the equation: R!=0

R∈R



We add all the numbers together, and all the variables

/R+2-(+4/5)=0

We get rid of parentheses

/R+2-4/5=0

We calculate fractions


()/5R+(-4R)/5R+2=0

We multiply all the terms by the denominator


(-4R)+2*5R+()=0

We add all the numbers together, and all the variables

(-4R)+2*5R=0

Wy multiply elements

(-4R)+10R=0

We get rid of parentheses

-4R+10R=0

We add all the numbers together, and all the variables

6R=0

R=0/6

R=0

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