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posted by Sam on Thursday, March 1, 2012 at 11:00am.

In triangleRST, mangR = (2x + 10)°, mangS = (2x + 25)°, and mangT = (x – 5)°. Find the value of x.

(2x+10) + (2x+25) + (x-5) = 180 Deg. Solve for x.

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