Answer:
x = 15
Step-by-step explanation:
<JKM is the sum of the two smaller angles.
<JKL + <LKM = <JKM
<JKM = 154
<JKL = 6x
<LKM = 3x + 19
6x + 3x + 19 = 154 Subtract 19 from both sides
9x + 19 - 19 = 154-19 Combine
9x = 135 Divide by 9
9x/9 = 135/9
x = 15
