Solve the Equation: Finding the Missing Number in 5 + (?) = -6

5+(?)=−6 5+(?)=-6 -5-5-5-4-4-4-3-3-3-2-2-2-1-1-1000111222333444555666-6-6-6-7-7-7

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Complete the missing
00:04 The number is directed and positive
00:09 The positive direction on the axis is to the right, so we'll take 5 to the right
00:15 This is the desired number, let's find it on the axis
00:21 Let's find its distance from point (5)
00:30 The direction of progress is to the left (negative)
00:46 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

5+(?)=−6 5+(?)=-6 -5-5-5-4-4-4-3-3-3-2-2-2-1-1-1000111222333444555666-6-6-6-7-7-7

2

Step-by-step solution

To know how much we need to add to the number 5 to get minus 6, we will count the number of steps between the numbers.

Also, we'll pay attention to which direction we moved, if we went right then the number is positive, if we went left the number will be negative.

We'll locate the number 5, and move left until we reach minus 6, where each step represents one whole number, as follows:

-5-5-5-4-4-4-3-3-3-2-2-2-1-1-1000111222333444555666-6-6-6-7-7-7

We'll discover that the number of steps is 11, since we went left, the number will be minus 11.

3

Final Answer

−11 -11

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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