x+6+8x=-21

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Solution for x+6+8x=-21 equation: 



x+6+8x=-21

We move all terms to the left:

x+6+8x-(-21)=0

We add all the numbers together, and all the variables

9x+27=0

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

9x=-27

x=-27/9

x=-3

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