Solve the Equation: (-5)·(?4)=20 - Determining the Missing Sign

Question

Fill in the corresponding sign for the following question

$(-5)\cdot(?4)=20$

00:00 Complete the appropriate sign

00:04 The solution is positive, so we want a sign that leads to a positive result

00:09 Negative times negative always equals positive

00:14 Therefore the appropriate sign is negative

00:18 And this is the solution to the question

We must first consider what value we need to multiply by a negative number in order to obtain a positive number.

Let's remember the rule:

$(-x)\times(-x)=+x$

Therefore, the answer is:

$-4$

$(-)$