155=7x+3(x+15)

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Solution for 155=7x+3(x+15) equation: 



155=7x+3(x+15)

We move all terms to the left:

155-(7x+3(x+15))=0



We calculate terms in parentheses: -(7x+3(x+15)), so:

7x+3(x+15)

We multiply parentheses

7x+3x+45

We add all the numbers together, and all the variables

10x+45

Back to the equation:

-(10x+45)



We get rid of parentheses

-10x-45+155=0

We add all the numbers together, and all the variables

-10x+110=0

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

-10x=-110

x=-110/-10

x=+11

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