Answer and Explanation
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The solution of the equation is 20. 
( The value of x. )
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The value of x is 20.
We can figure this out by...
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 but what does x equal?
 but what does x equal?
 =
 = 

 =
 = 

Since both are equal to -8, that means 
 =
 = 
 .
.
Which means that...
x = 20
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Hope this helps! <3
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