3x=(8x-40)

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Solution for 3x=(8x-40) equation: 



3x=(8x-40)

We move all terms to the left:

3x-((8x-40))=0



We calculate terms in parentheses: -((8x-40)), so:

(8x-40)

We get rid of parentheses

8x-40

Back to the equation:

-(8x-40)



We get rid of parentheses

3x-8x+40=0

We add all the numbers together, and all the variables

-5x+40=0

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

-5x=-40

x=-40/-5

x=+8

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