Evaluate the Expression: -2-(-2)+3?4-(-2) Step by Step

Integer Operations with Double Negatives

2(2)+3?4(2) -2-(-2)+3?4-(-2)

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:09 Let's pick the correct sign.
00:12 Remember: a negative times a negative is always positive.
00:16 Now let's open the parentheses.
00:24 Find the point, negative two, on the number line.
00:28 This number is positive, so let's move.
00:31 Jump two steps to the right, which is the positive direction.
00:36 Again, the number is positive.
00:39 Let's take three more steps to the right on the number line.
00:47 Great! That's it for the left side. Now, let's work on the right side.
00:52 Just like before, a negative times a negative equals positive.
00:57 Let's open those parentheses now.
01:00 And there you have it, the solution for the right side!
01:09 Moving to the right makes numbers grow larger.
01:13 That's how we solve this question. Well done!

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

2(2)+3?4(2) -2-(-2)+3?4-(-2)

2

Step-by-step solution

Let's solve the left side first.

Let's remember the rule:

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

Let's write the exercise in the appropriate form:

2+2+3= -2+2+3=

On the number line, we'll locate negative 2 and move two steps to the right (since 2 is greater than zero):

-5-5-5555-4-4-4-3-3-3-2-2-2-1-1-1000111222333444

We can see that we reached the number 0, and now we'll move three more steps to the right (since 3 is greater than zero):

-5-5-5555-4-4-4-3-3-3-2-2-2-1-1-1000111222333444

We can see that we reached the number 3.

Now let's solve the right side:

Again, let's remember the rule:

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

Let's write the exercise in the appropriate form and solve it:

4+2=6 4+2=6

Now we can see that the right side is greater than the left side, therefore:

3<6 3 < 6

3

Final Answer

< <

Key Points to Remember

Essential concepts to master this topic
  • Double Negative Rule: Subtracting a negative number equals adding the positive
  • Technique: Convert (2) -(-2) to +2 +2 before calculating
  • Check: Left side: 2+2+3=3 -2+2+3=3 , Right side: 4+2=6 4+2=6 , so 3<6 3 < 6

Common Mistakes

Avoid these frequent errors
  • Treating double negatives as subtraction
    Don't calculate (2) -(-2) as 2 -2 = wrong answer! This ignores the double negative rule and gives incorrect results. Always convert (x) -(-x) to +x +x first.

Practice Quiz

Test your knowledge with interactive questions

What will be the sign of the result of the next exercise?

\( (-2)\cdot(-4)= \)

FAQ

Everything you need to know about this question

Why does subtracting a negative equal adding a positive?

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Think of it as removing a debt! If you owe -2(adebt),andthatdebtistakenaway,youactuallygain+2 (a debt), and that debt is taken away, you actually gain +2. So (2)=+2 -(-2) = +2 .

How do I remember the double negative rule?

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Use the phrase "two negatives make a positive". When you see (x) -(-x) , the two negative signs cancel out to give +x +x .

Should I solve both sides separately before comparing?

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Yes! Always simplify the left side completely, then the right side completely. Only then compare the final results to determine <, =, or >.

What if I get confused with the signs?

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Write each step clearly! First, identify all double negatives and convert them to positives. Then do the arithmetic step by step, keeping track of positive and negative numbers carefully.

How can I check my comparison is correct?

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After calculating both sides, ask yourself: "Is the left number really smaller/equal/larger than the right number?" Double-check your arithmetic if you're unsure.

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