x/9=(x+1)/12

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Solution for x/9=(x+1)/12 equation: 



x/9=(x+1)/12

We move all terms to the left:

x/9-((x+1)/12)=0

We calculate fractions


12x^2/()+(-((x+1)*9)/()=0



We calculate terms in parentheses: +(-((x+1)*9)/(), so:

-((x+1)*9)/(

We multiply all the terms by the denominator


-((x+1)*9)



We calculate terms in parentheses: -((x+1)*9), so:

(x+1)*9

We multiply parentheses

9x+9

Back to the equation:

-(9x+9)



We get rid of parentheses

-9x-9

Back to the equation:

+(-9x-9)



We get rid of parentheses

12x^2/()-9x-9=0

We multiply all the terms by the denominator


12x^2-9x*()-9*()=0

We add all the numbers together, and all the variables

12x^2-9x*()=0

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