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nilbert
Hi there!

The integer opposite to another on the number line is that number's negative or positive.

Hence, the opposite of 245 is -245.

Hope this helps!
AnimeBrainly
The opposite integer is the number on a number line that has the same amount of spaces from 0.

+245 is 245 spaces away from 0
-245 is 245 spaces away from 0

-245 is your answer

hope this helps