(8x)=(21x-12)=(10x+9)

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Solution for (8x)=(21x-12)=(10x+9) equation: 



(8x)=(21x-12)=(10x+9)

We move all terms to the left:

(8x)-((21x-12))=0



We calculate terms in parentheses: -((21x-12)), so:

(21x-12)

We get rid of parentheses

21x-12

Back to the equation:

-(21x-12)



We get rid of parentheses

8x-21x+12=0

We add all the numbers together, and all the variables

-13x+12=0

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

-13x=-12

x=-12/-13

x=12/13

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