<PRE><B>Question 16166</B>
What you have is two equations with two unknowns.  
2x= 3w
x+w= 180


You can solve by substitution or elimination in several different ways, but probably the easiest way is to solve for x in the second equation and get 
x= 180-w.


Substitute this back into the equation:
2x= 3w
2(180 - w) = 3w
360 - 2w = 3w


Add +2w to each side:
360 = 5w


Divide both sides by 5:
{{{360/5 = (5w)/5}}}
72 = w
w= 72 degrees
x= 180-w
x=180-72= 108 degrees


Check:  make sure that
 2x= 3w
2(108) = 3(72)
216 = 216



R^2 at SCC
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