Determine the answer to 3 + (−5) and explain the steps using a number line.

The value of the expression 3 + (-5) is - 2

Given the value :

3 + (-5)

From the operation rule :

+ and - = -

Hence,

3 + (-5) = 3 - 5 = - 2

Using the number line analogy :

Positive values (+) lies to the right of a number line while negative (-) are positioned on the left.

To perform 3 + (-5) using a number line ;

From +3 taking 5 points backwards to the left (-5) ; takes us to the point - 2

Hence, the value of the expression 3 + (-5) = - 2

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Step-by-step explanation:

On a number line

Using the number line,

Add 3 + (-5)

Step 1. Find 3 on the number line  

Start at 0 and move three units to the right (see Image below).

This takes you to 3.

Step 2. Add (-5)

Start at 3 and move five units to the left.

This takes you to -2.

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