Need help on this question asap pleasee thank you!

You are on a cycling trip around europe with friends. you check the weather forecast for the first week. these are the temperatures for the week. sun mon tues wed thurs fri sat 16°c 20°c 24°c 28°c 28°c 23°c 15°c what is the mean temperature forecast for the week?

Simplify using positive exponents only.

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2