31+12x;x=4

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Solution for 31+12x;x=4 equation: 



31+12xx=4

We move all terms to the left:

31+12xx-(4)=0

We add all the numbers together, and all the variables

12xx+27=0

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

12xx=-27

x=-27/1

x=-27

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