Answer:
x = 25.2
<AFB = 158.4 degrees
<RST = 21.6 degrees
Explanation:
7x-18+72-2x = 180
5x+54=180
5x= 126
<AFB = 7(25.2)-18 = 158.4
<RST= 72-2(25.2) = 21.6
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