SOLUTION: if QRST is a rectangle find X if angle Q is equal to 10x-80

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Question 738475: if QRST is a rectangle find X if angle Q is equal to 10x-80
Answer by MathLover1(20850) About Me  (Show Source):
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if QRST is a rectangle, then each angle is 90°
so, angle Q=90°
if angle Q is equal to 10x-80, then 10x-80=90
10x-80=90.....solve for x
10x=90%2B80
10x=170
x=170%2F10
x=17