3x+12=2x+42

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Solution for 3x+12=2x+42 equation: 



3x+12=2x+42

We move all terms to the left:

3x+12-(2x+42)=0

We get rid of parentheses

3x-2x-42+12=0

We add all the numbers together, and all the variables

x-30=0

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

x=30

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