6x+9=30+3x

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Solution for 6x+9=30+3x equation: 



6x+9=30+3x

We move all terms to the left:

6x+9-(30+3x)=0

We add all the numbers together, and all the variables

6x-(3x+30)+9=0

We get rid of parentheses

6x-3x-30+9=0

We add all the numbers together, and all the variables

3x-21=0

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

3x=21

x=21/3

x=7

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