4x+12=42-5x

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Solution for 4x+12=42-5x equation: 



4x+12=42-5x

We move all terms to the left:

4x+12-(42-5x)=0

We add all the numbers together, and all the variables

4x-(-5x+42)+12=0

We get rid of parentheses

4x+5x-42+12=0

We add all the numbers together, and all the variables

9x-30=0

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

9x=30

x=30/9

x=3+1/3

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