3x=(8x+15)

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Solution for 3x=(8x+15) equation: 



3x=(8x+15)

We move all terms to the left:

3x-((8x+15))=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

3x-8x-15=0

We add all the numbers together, and all the variables

-5x-15=0

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

-5x=15

x=15/-5

x=-3

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