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<A+<B = 150o
2x+3x = 150o
x = 30o
<A = 2x = 60o
2x+3x+30=180
5x+30=180
5x=180-30
5x=150
x=150/5
x=30
sudut A=2x=2*30=60
klo gslh si ya,klo mnurut lu salah jgn diikutin ya