20-x.2=12

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Solution for 20-x.2=12 equation: 



20-x.2=12

We move all terms to the left:

20-x.2-(12)=0

We add all the numbers together, and all the variables

-x.2+8=0

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

-x.2=-8

x=-8/1

x=-8

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