390=2(15+3x)+2x

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Solution for 390=2(15+3x)+2x equation: 



390=2(15+3x)+2x

We move all terms to the left:

390-(2(15+3x)+2x)=0

We add all the numbers together, and all the variables

-(2(3x+15)+2x)+390=0



We calculate terms in parentheses: -(2(3x+15)+2x), so:

2(3x+15)+2x

We add all the numbers together, and all the variables

2x+2(3x+15)

We multiply parentheses

2x+6x+30

We add all the numbers together, and all the variables

8x+30

Back to the equation:

-(8x+30)



We get rid of parentheses

-8x-30+390=0

We add all the numbers together, and all the variables

-8x+360=0

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

-8x=-360

x=-360/-8

x=+45

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