3x+2x+12=3x+30

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Solution for 3x+2x+12=3x+30 equation: 



3x+2x+12=3x+30

We move all terms to the left:

3x+2x+12-(3x+30)=0

We add all the numbers together, and all the variables

5x-(3x+30)+12=0

We get rid of parentheses

5x-3x-30+12=0

We add all the numbers together, and all the variables

2x-18=0

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

2x=18

x=18/2

x=9

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