SOLUTION: Hello! I need help with this question, shown in this image: http://prntscr.com/l010c5

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Question 1124618: Hello! I need help with this question, shown in this image: http://prntscr.com/l010c5
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

Angle Addition Postulate: Addition property of equality