Writing the equation to convert °C into Farenheit

It is not possible to write the equation the same way as shown in “instructions”(or I haven’t been able to do so). I’ve completed the puzzle but I had to write the equation differently.

I’m posting this because maybe some people will get stuck here trying to write the equation exactly as it has been shown.

If we can write the equation shown, explain to me how to do that.:slightly_smiling_face: