21+(17+13)=(21+x)+13

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Solution for 21+(17+13)=(21+x)+13 equation: 



21+(17+13)=(21+x)+13

We move all terms to the left:

21+(17+13)-((21+x)+13)=0

We add all the numbers together, and all the variables

-((x+21)+13)+21+30=0

We add all the numbers together, and all the variables

-((x+21)+13)+51=0



We calculate terms in parentheses: -((x+21)+13), so:

(x+21)+13

We get rid of parentheses

x+21+13

We add all the numbers together, and all the variables

x+34

Back to the equation:

-(x+34)



We get rid of parentheses

-x-34+51=0

We add all the numbers together, and all the variables

-1x+17=0

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

-x=-17

x=-17/-1

x=+17

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