3x=(4x-30)

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Solution for 3x=(4x-30) equation: 



3x=(4x-30)

We move all terms to the left:

3x-((4x-30))=0



We calculate terms in parentheses: -((4x-30)), so:

(4x-30)

We get rid of parentheses

4x-30

Back to the equation:

-(4x-30)



We get rid of parentheses

3x-4x+30=0

We add all the numbers together, and all the variables

-1x+30=0

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

-x=-30

x=-30/-1

x=+30

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