13x+9=-12

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Solution for 13x+9=-12 equation: 



13x+9=-12

We move all terms to the left:

13x+9-(-12)=0

We add all the numbers together, and all the variables

13x+21=0

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

13x=-21

x=-21/13

x=-1+8/13

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