3x+12-1=7

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Solution for 3x+12-1=7 equation: 



3x+12-1=7

We move all terms to the left:

3x+12-1-(7)=0

We add all the numbers together, and all the variables

3x+4=0

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

3x=-4

x=-4/3

x=-1+1/3

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