Answer:
x = 7
Explanation:
What we know:
<GHJ = 112°
<GHK = 4x°
<KHJ = 12x°
<GHJ = <GHK + < KHJ
Plug in the values to isolate x:
112 = 4x + 12x
112 = 16x
112 / 16 = x
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