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9x = 180
x = 180/9
x = 20
10) x + 35 + 2x - 5 = 180
3x + 30 = 180
3x = 180 - 30
3x = 150
x = 150/3
x = 50 -----> Q4 = 2x - 5
= 2(50) - 5
=100 - 5
= 95
11) Sudut P = Sudut ADF = 180 -(60+35)
= 180 - 95
= 85