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Verified Answer :

The given value to x=4 is the right value.

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ivystorm

The given value is a solution of the equation

Explanation:

First, plug the 4 into the x
(4) + 16 = 20

Then, add 4 and 16, which gives us 20
20 = 20

Since, 20 = 20, x= 4 is a solution of the equation

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