Solve Addition Expression: (+8) + (-4.5) Step by Step

Solve the following expression:

(+8)+(−4.5)= ? (+8)+(-4.5)=\text{ ?}

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Solve
00:03 Find point (8) on the axis
00:08 Positive times negative always equals negative, so we subtract
00:12 To subtract, we move in the left (negative) direction on the axis
00:19 Let's calculate
00:23 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Solve the following expression:

(+8)+(−4.5)= ? (+8)+(-4.5)=\text{ ?}

2

Step-by-step solution

First we need to locate the number 8 on the number line and move 4.5 steps to the left from it:

000888

Remember the rule:

+(−x)=−x +(-x)=-x

Now let's rewrite the problem in the appropriate form and solve:

8−4.5=3.5 8-4.5=3.5

3

Final Answer

3.5 3.5

Practice Quiz

Test your knowledge with interactive questions

a is negative number.

b is negative number.

What is the sum of a+b?

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