Answer:
Step-by-step explanation:
let measure of ∠J=x
measure of ∠K=x+9
measure of ∠ L=x-21
∠J+∠K+∠L=180°
x+(x+9)+(x-21)=180°
3x-12=180
3x=180+12=192
x=64
∠J=64°
∠K=x+9=64+9=73°
∠L=x-21=64-21=43°
J = 48
K = 57
L =>75
