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

Question

Solve the following expression:

$(+8)+(-4.5)=\text{ ?}$

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

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

Remember the rule:

$+(-x)=-x$

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

$8-4.5=3.5$

$3.5$