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Answer:
∠JKH = 90°
(13x-1)°+(9x+3)° = 90°
13x-1+9x+3=90
22x+2=90
22x=90-2
22x=88
x=88/22=4
x=4°
∠JKG = (13x-1)° = 13*4 -1 = 51°
∠GKH =(9x+3)² = 9*4 +3 = 39°
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