9x+20=-x+10

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Solution for 9x+20=-x+10 equation: 



9x+20=-x+10

We move all terms to the left:

9x+20-(-x+10)=0

We add all the numbers together, and all the variables

9x-(-1x+10)+20=0

We get rid of parentheses

9x+1x-10+20=0

We add all the numbers together, and all the variables

10x+10=0

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

10x=-10

x=-10/10

x=-1

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