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40 votes
40 votes
Find the x value (6x+9)° (4x-19)°

User Roysch
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1 Answer

18 votes
18 votes

In this problem m and n are parallel lines, and the first angle is an exteriar angle an the secon is a interior angle.

this two condition give us that the two angles are complementary anlges so the sum of them should be 180 so:


6x+9+4x-19=180

and we can solve for x so:


\begin{gathered} 10x-10=180 \\ 10x=180+10 \\ x=(190)/(10) \\ x=19 \end{gathered}

User RoboTamer
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