Attempted this but pretty sure I'm lost somewhere. How do I set these equations up?

10. In 1965, Penzias and Wilson discovered the isotropic cosmic background radiation of the microwave and earned the Nobel Prize in 1978. The cosmic microwave background radiation is measured by 2.725 Kelvin through the entire sky. Convert this temperature into the Celsius scale as well as the Fahrenheit scale. Hint: Use the converting formula: OF = 1.8 C + 32. The relation between the Celsius scale and the Kelvin scale is K = C + 273.15. K : C + 273. 15