4x+x-12=42

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



4x+x-12=42

We move all terms to the left:

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

We add all the numbers together, and all the variables

5x-54=0

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

5x=54

x=54/5

x=10+4/5

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