Insert the compatible sign:
−5−5−5−5?5−15 -5-5-5-5?5-15 −5−5−5−5?5−15
Let's recall the laws:
−(−x)=+x -(-x)=+x −(−x)=+x
+(−x)=−x +(-x)=-x +(−x)=−x
We'll solve the left side first:
−5−5=−10 -5-5=-10 −5−5=−10
−10−5=−15 -10-5=-15 −10−5=−15
−15−5=−20 -15-5=-20 −15−5=−20
Now let's solve the right side:
5−15=−10 5-15=-10 5−15=−10
Since the right side is larger, the appropriate sign will be:
-20 < -10
<