x-7;x=12

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Solution for x-7;x=12 equation: 



x-7x=12

We move all terms to the left:

x-7x-(12)=0

We add all the numbers together, and all the variables

-6x-12=0

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

-6x=12

x=12/-6

x=-2

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