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4 votes
The value of x is _____

The value of x is _____-example-1
User Josketres
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Angle TRS is equal to 180 - 9x (straight angles).

The sum of all the interior angles of a triangle is 180. Thus,

180 - 9x + 5x + 9 + x = 180, resulting in -9x + 5x + 9 + x = 0.
Then -4x + x = -9, or -3x = -9, or x = 3 (answer)
User Mike Feng
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