8x+x=-9

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Solution for 8x+x=-9 equation: 



8x+x=-9

We move all terms to the left:

8x+x-(-9)=0

We add all the numbers together, and all the variables

9x+9=0

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

9x=-9

x=-9/9

x=-1

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