4x+31=139

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Solution for 4x+31=139 equation: 



4x+31=139

We move all terms to the left:

4x+31-(139)=0

We add all the numbers together, and all the variables

4x-108=0

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

4x=108

x=108/4

x=27

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