12=xx-3

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Solution for 12=xx-3 equation: 



12=xx-3

We move all terms to the left:

12-(xx-3)=0

We get rid of parentheses

-xx+3+12=0

We add all the numbers together, and all the variables

-xx+15=0

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

-xx=-15

x=-15/1

x=-15

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