Question 1182859
.
<pre>

Let the angle be x degrees;  

then the complement angle is 90-x degrees,


and your equation to find x is


    x - (90-x) = 20  degrees.


Simplify and find x


    2x - 90 = 20

    2x      = 20 + 90 = 110

     x                = 110/2 = 55  degrees.    <U>ANSWER</U>
</pre>

Solved and explained.


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