3x+12=-105

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Solution for 3x+12=-105 equation: 



3x+12=-105

We move all terms to the left:

3x+12-(-105)=0

We add all the numbers together, and all the variables

3x+117=0

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

3x=-117

x=-117/3

x=-39

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