Question 1013139
.
Angle F+Angle G+Angle H=180
(4x+7)+(5x-31)+(7x-52)=180
16x-76=180
16x=256
x=16
.
Angle F=4x+7=4(16)+7=64=7=71
.
Angle G=5x-31=5(16)-31=80-31=49
.
Angle H=7x-52=7(16)-52=112-52=60
.
ANSWER: G < H < F
.