12x-9=20x+7

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Solution for 12x-9=20x+7 equation: 



12x-9=20x+7

We move all terms to the left:

12x-9-(20x+7)=0

We get rid of parentheses

12x-20x-7-9=0

We add all the numbers together, and all the variables

-8x-16=0

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

-8x=16

x=16/-8

x=-2

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