Solve the Equation: Finding the Missing Sign in (-5)·(?3)=15

Question

Fill in the corresponding sign for the following question

$(-5)\cdot(?3)=15$

00:00 Complete the appropriate sign

00:03 The solution is positive, so we want a sign that leads to a positive result

00:12 Negative times negative is always equal to positive

00:17 Therefore the appropriate sign is negative

00:20 And this is the solution to the question

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

Let's remember the rule:

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

Therefore, the answer is as follows:

$-3$

$(-)$