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Solve for angle 9x+20
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2 votes
Solve for angle 9x+20

Solve for angle 9x+20-example-1
User GRoutar
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1 Answer

2 votes

Look at the picture.


(9x+21)+(6x-6)=180^o\\\\(9x+6x)+(21-6)=180\\\\15x+15=180\ \ \ \ |-15\\\\15x=165\ \ \ \ |:15\\\\x=11\\\\9x+21=9(11)+21=99+21=120^o

Solve for angle 9x+20-example-1
User Xrender
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