Solve the Equation: Finding the Missing Factor in (-3)⬜ = -15

Fill in the missing number:

(−3)⋅⬜=−15 (-3)\cdot⬜=-15

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:07 Let's start by finding the unknown number.
00:15 Remember, a negative times a positive always gives us a negative.
00:19 So, the unknown number must be positive.
00:23 Let's work together to discover what this unknown number is.
00:34 And there you have it! That's how we solve this problem.

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Fill in the missing number:

(−3)⋅⬜=−15 (-3)\cdot⬜=-15

2

Step-by-step solution

Let's remember the rule:

(−x)×(+x)=−x (-x)\times(+x)=-x

Let's think about what number we need to multiply by 3 to get 15:

3×5=15 3\times5=15

Now let's put the numbers together with the appropriate sign as written in the rule above as follows:

−3×(+5)=−15 -3\times(+5)=-15

3

Final Answer

5 5

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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