-6, -7, -8 degrees Celsius. I know these temperatures are colder because they are are a higher negative, and when measuring temperature the higher the negative the colder the temperature is.
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Answer:
-6
Step-by-step explanation:

You could write 42/20 for #60.
Positive 3, If You're starting at -6 and you add the first 6 it's at 0, now you have 3 more to add to make 9. And that gives you positive 3. or if you do 9 - 6 you can get your answer that way too.