Solve: Adding (-1/5) and (-3 4/5) Negative Fractions

Question

Solve the following problem:

$(-\frac{1}{5})+(-3\frac{4}{5})=$

00:00 Solve

00:03 Find the point on the axis

00:07 Positive times negative is always negative, therefore subtract

00:10 To subtract, move in the left (negative) direction on the axis

00:17 Calculate

00:19 And this is the solution to the question

Let's mark minus $\frac{1}{5}$ on the number line and move $3\frac{4}{5}$ steps to the left, meaning our result will be a negative number:

Let's remember the rule:

$+(-x)=-x$

Now let's write the exercise in the appropriate form and solve it:

$-\frac{1}{5}-3\frac{4}{5}=-4$

$-4$