8x+21=-6X-7

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Solution for 8x+21=-6X-7 equation: 



8x+21=-6x-7

We move all terms to the left:

8x+21-(-6x-7)=0

We get rid of parentheses

8x+6x+7+21=0

We add all the numbers together, and all the variables

14x+28=0

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

14x=-28

x=-28/14

x=-2

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