123=3x+5(3x+3)

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Solution for 123=3x+5(3x+3) equation: 



123=3x+5(3x+3)

We move all terms to the left:

123-(3x+5(3x+3))=0



We calculate terms in parentheses: -(3x+5(3x+3)), so:

3x+5(3x+3)

We multiply parentheses

3x+15x+15

We add all the numbers together, and all the variables

18x+15

Back to the equation:

-(18x+15)



We get rid of parentheses

-18x-15+123=0

We add all the numbers together, and all the variables

-18x+108=0

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

-18x=-108

x=-108/-18

x=+6

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