4x=(2x-30)

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Solution for 4x=(2x-30) equation: 



4x=(2x-30)

We move all terms to the left:

4x-((2x-30))=0



We calculate terms in parentheses: -((2x-30)), so:

(2x-30)

We get rid of parentheses

2x-30

Back to the equation:

-(2x-30)



We get rid of parentheses

4x-2x+30=0

We add all the numbers together, and all the variables

2x+30=0

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

2x=-30

x=-30/2

x=-15

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