Compare Expressions: Finding the Sign Between 4+7-3+1-5 and 4+(7-3+1-5)

What is the missing sign?

4+7−3+1−5 4+7-3+1-5

___

4+(7−3+1−5) 4+(7-3+1-5)

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:11 First, decide if we need a plus or minus sign.
00:15 Next, calculate each side carefully.
00:19 Then, solve from left to right using the proper order of operations.
00:31 We've solved the left side. Now, let's work on the right side.
00:36 Always start by solving inside the parentheses first.
00:40 Even within the parentheses, solve from left to right.
00:51 Here's how we calculate the right side.
00:54 And there you have it! This is our final solution. Great job!

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

What is the missing sign?

4+7−3+1−5 4+7-3+1-5

___

4+(7−3+1−5) 4+(7-3+1-5)

2

Step-by-step solution

First, we solve the exercise:

4+7−3+1−5= 4+7-3+1-5 =

According to the rules of the order of operations, we solve the exercise from left to right:

4+7=11 4+7=11

11−3=8 11-3=8

8+1=9 8+1=9

9−5=4 9-5=4

Now we solve the exercise:

4+(7−3+1−5)= 4+(7-3+1-5) =

According to the rules of the order of operations, we first solve the parentheses and then we will join:

(7−3+1−5)= (7-3+1-5)=

(4+1−5)= (4+1-5)=

(5−5)=0 (5-5)=0

4+0=4 4+0=4

Therefore:

4=4 4=4

3

Final Answer

= =

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\( 100+5-100+5 \)

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