-1x=12-4

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Solution for -1x=12-4 equation: 



-1x=12-4

We move all terms to the left:

-1x-(12-4)=0

We add all the numbers together, and all the variables

-1x-8=0

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

-x=8

x=8/-1

x=-8

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