Carol H. answered 09/10/17
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9x - 10 + 83 = 127
9x + 73 = 127
9x = 54
x = 6
Drawing the picture correctly is the key. Draw ∠JKL first. Then draw ray KM.
It should be easy to see that m∠JKM + m∠MKL = m∠JKL.