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ZA and B are vertical angles. If m_A = (3x - 30° and mZB = (2x – 9)°, then find the value of x.

ZA and B are vertical angles. If m_A = (3x - 30° and mZB = (2x – 9)°, then find the value of x.
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8 votes
ZA and B are vertical angles. If m_A = (3x - 30° and mZB = (2x – 9)°,

then find the value of x.

User DFTR
by
8.7k points

1 Answer

6 votes
3x-30=2x-9
-2x -2x
1x-30=-9
+30 +30
1x=21
21/1
x=21
User Xiaofu
by
7.9k points
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