Find the Missing Operator in -5-5-5-5?5-15: Mathematical Expression Challenge

Question

Insert the compatible sign:

5555?515 -5-5-5-5?5-15

Video Solution

Step-by-Step Solution

Let's recall the laws:

(x)=+x -(-x)=+x

+(x)=x +(-x)=-x

We'll solve the left side first:

55=10 -5-5=-10

105=15 -10-5=-15

155=20 -15-5=-20

Now let's solve the right side:

515=10 5-15=-10

Since the right side is larger, the appropriate sign will be:

-20 < -10

Answer

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