(11+21)11=(12+x)12

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Solution for (11+21)11=(12+x)12 equation: 



(11+21)11=(12+x)12

We move all terms to the left:

(11+21)11-((12+x)12)=0

We add all the numbers together, and all the variables

-((x+12)12)+3211=0



We calculate terms in parentheses: -((x+12)12), so:

(x+12)12

We multiply parentheses

12x+144

Back to the equation:

-(12x+144)



We get rid of parentheses

-12x-144+3211=0

We add all the numbers together, and all the variables

-12x+3067=0

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

-12x=-3067

x=-3067/-12

x=255+7/12

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