13+12x=10x-9

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Solution for 13+12x=10x-9 equation: 



13+12x=10x-9

We move all terms to the left:

13+12x-(10x-9)=0

We get rid of parentheses

12x-10x+9+13=0

We add all the numbers together, and all the variables

2x+22=0

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

2x=-22

x=-22/2

x=-11

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