x = 55, because 60 + 65 = 125 and 180 - 125 = 55
x = 125, because 180 - 160 +65) = 55 and 180 - 55 = 125
65
x = 305, because 60+ 65 = 125, and 125 + 180 = 305
x = 175, because 180-65 = 115 and 115 + 60 = 175
