x+2x+3x+3(x+1)=30

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Solution for x+2x+3x+3(x+1)=30 equation: 



x+2x+3x+3(x+1)=30

We move all terms to the left:

x+2x+3x+3(x+1)-(30)=0

We add all the numbers together, and all the variables

6x+3(x+1)-30=0

We multiply parentheses

6x+3x+3-30=0

We add all the numbers together, and all the variables

9x-27=0

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

9x=27

x=27/9

x=3

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