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

Fill in the corresponding sign for the following question

(−5)⋅(?3)=15 (-5)\cdot(?3)=15

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:09 Let's complete the correct sign.
00:12 Since the solution is positive, we need a sign that results in a positive outcome.
00:21 Remember, a negative times a negative always equals a positive.
00:26 So, the right sign here is negative.
00:29 And that's how we solve this problem!

Step-by-step written solution

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1

Understand the problem

Fill in the corresponding sign for the following question

(−5)⋅(?3)=15 (-5)\cdot(?3)=15

2

Step-by-step solution

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)×(−x)=+x (-x)\times(-x)=+x

Therefore, the answer is as follows:

−3 -3

3

Final Answer

(−) (-)

Practice Quiz

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What will be the sign of the result of the next exercise?

\( (-2)\cdot(-4)= \)

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