(r-1)/3=(r+5)/4=1/2

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Solution for (r-1)/3=(r+5)/4=1/2 equation: 



(r-1)/3=(r+5)/4=1/2

We move all terms to the left:

(r-1)/3-((r+5)/4)=0

We calculate fractions


r/()+(-((r+5)*3)/()=0



We calculate terms in parentheses: +(-((r+5)*3)/(), so:

-((r+5)*3)/(

We multiply all the terms by the denominator


-((r+5)*3)



We calculate terms in parentheses: -((r+5)*3), so:

(r+5)*3

We multiply parentheses

3r+15

Back to the equation:

-(3r+15)



We get rid of parentheses

-3r-15

Back to the equation:

+(-3r-15)



We get rid of parentheses

r/()-3r-15=0

We multiply all the terms by the denominator


r-3r*()-15*()=0

We add all the numbers together, and all the variables

r-3r*()=0

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