Answer:
J 28
Step-by-step explanation:
3x-10 = plug in x for angle C
84-10 = subtract for angle C
74 = C
3x/3 - B/2
For last Angle B always look for 180
74 + 50 = 124
180 - 124 = 56
(2x) = plug in x for angle B
56 = B
x = B/2
x = 3x/3 -B/2
x = 28
Hope this helps
