55=7x+6(x+20)

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Solution for 55=7x+6(x+20) equation: 



55=7x+6(x+20)

We move all terms to the left:

55-(7x+6(x+20))=0



We calculate terms in parentheses: -(7x+6(x+20)), so:

7x+6(x+20)

We multiply parentheses

7x+6x+120

We add all the numbers together, and all the variables

13x+120

Back to the equation:

-(13x+120)



We get rid of parentheses

-13x-120+55=0

We add all the numbers together, and all the variables

-13x-65=0

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

-13x=65

x=65/-13

x=-5

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