(11x-21)=(8x+15)

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Solution for (11x-21)=(8x+15) equation: 



(11x-21)=(8x+15)

We move all terms to the left:

(11x-21)-((8x+15))=0

We get rid of parentheses

11x-((8x+15))-21=0



We calculate terms in parentheses: -((8x+15)), so:

(8x+15)

We get rid of parentheses

8x+15

Back to the equation:

-(8x+15)



We get rid of parentheses

11x-8x-15-21=0

We add all the numbers together, and all the variables

3x-36=0

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

3x=36

x=36/3

x=12

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