8+3-x=12

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Solution for 8+3-x=12 equation: 



8+3-x=12

We move all terms to the left:

8+3-x-(12)=0

We add all the numbers together, and all the variables

-1x-1=0

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

-x=1

x=1/-1

x=-1

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