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

Insert the compatible sign:

−5−5−5−5?5−15 -5-5-5-5?5-15

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:10 First, pick the correct mathematical sign. Ready?
00:14 Next, find the point, negative five, on the number line.
00:19 Now, take three jumps to the left, toward the negative side.
00:24 Remember, each jump here equals five units.
00:28 Great! We've solved the left side. Let's tackle the right side.
00:33 Locate the point fifteen on the number line.
00:36 Take one jump to the left. That's moving toward the negative.
00:42 Fantastic! We've completed the right side.
00:47 As you move right on the number line, numbers increase.
00:51 And there you have it! That's how you solve this question.

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Insert the compatible sign:

−5−5−5−5?5−15 -5-5-5-5?5-15

2

Step-by-step solution

Let's recall the laws:

−(−x)=+x -(-x)=+x

+(−x)=−x +(-x)=-x

We'll solve the left side first:

−5−5=−10 -5-5=-10

−10−5=−15 -10-5=-15

−15−5=−20 -15-5=-20

Now let's solve the right side:

5−15=−10 5-15=-10

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

−20<−10 -20 < -10

3

Final Answer

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Practice Quiz

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\( (-8)-(-13)= \)

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