Solve 15-(-4): Understanding Double Negative Subtraction

15−(−4)= 15-(-4)=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Solve
00:03 Negative times negative always equals positive
00:09 Open parentheses
00:12 Calculate
00:15 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

15−(−4)= 15-(-4)=

2

Step-by-step solution

Let's remember the following law:

−(−x)=+ -(-x)=+

Now let's write the exercise in the appropriate form:

15+(4)=19 15+(4)=19

3

Final Answer

19 19

Practice Quiz

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a is negative number.

b is negative number.

What is the sum of a+b?

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