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3x+22+3x+2+2x-4= 180°
8x + 20 = 180°
8x = 180-20
8x = 160
x = 20
p = 3x+22
=3(20)+22
= 82°
q = 3x +2
= 3(20) +2
= 62°
r = 2x-4
= 2(20) -4
= 36
paling besar sudut P
8x + 20° = 180°
8x = 160°
x = 20°
sudut terbesar = 3(20°) + 22° = 82°