bagaimana cara nya yg ini beserta cara :)

Y = 140 F
140 F = 5/9 (140 - 32) C
          = 5/9 x 108 c
          = 5 x 12 = 60 C

F = (5/9) x (suhu F – 32)   = (5/9) x (140-32)   = (5/9) x 108   = 540/9   = 60 c