3x+x=8-12=

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Solution for 3x+x=8-12= equation: 



3x+x=8-12=

We move all terms to the left:

3x+x-(8-12)=0

We add all the numbers together, and all the variables

3x+x-(-4)=0

We add all the numbers together, and all the variables

4x+4=0

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

4x=-4

x=-4/4

x=-1

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