20°c=......°R.....K.....°F 86°f=......°c.......K....°F

1. 20°C= 4/5(20) =16°R
20°C = 20+ 273= 293°K
20°C= (9/5x 20) +32= 36+32= 68°F
2. 86°F= 5/9(86-32) =5/9x 54= 30°C
30°C = 30+ 273= 303°K
30°C= (9/5X 30) +32= 54+32= 86°F