13x-7x+12=-9

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Solution for 13x-7x+12=-9 equation: 



13x-7x+12=-9

We move all terms to the left:

13x-7x+12-(-9)=0

We add all the numbers together, and all the variables

6x+21=0

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

6x=-21

x=-21/6

x=-3+1/2

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