-12=(x)x-3

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Solution for -12=(x)x-3 equation: 



-12=(x)x-3

We move all terms to the left:

-12-((x)x-3)=0

We get rid of parentheses

-xx+3-12=0

We add all the numbers together, and all the variables

-xx-9=0

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

-xx=9

x=9/1

x=9

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