Solve -49÷(-7)×3×(-1/4): Multiple Operations with Negative Numbers

Solve the following equation:

49:7314= -49:-7\cdot3\cdot-\frac{1}{4}=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Solve
00:03 Let's write division as a fraction
00:10 Negative divided by negative always equals positive
00:21 Let's calculate the quotient
00:27 Let's continue solving one operation at a time
00:32 Positive times negative always equals negative
00:38 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

Solve the following equation:

49:7314= -49:-7\cdot3\cdot-\frac{1}{4}=

2

Step-by-step solution

Let's begin by writing the division exercise as a simple fraction:

497×3×(14)= \frac{-49}{-7}\times3\times(-\frac{1}{4})=

Note that we are dividing between two negative numbers, therefore the result must be positive:

497×3×(14)= \frac{49}{7}\times3\times(-\frac{1}{4})=

Let's proceed to solve the division exercise:

7×3×14= 7\times3\times-\frac{1}{4}=

Let's now solve the exercise from left to right:

7×3=21 7\times3=21

We should obtain the following exercise:

21×14= 21\times-\frac{1}{4}=

Note that we are multiplying a positive number by a negative number, therefore the result must be a negative number:

214 -\frac{21}{4}

Let's write the result as a mixed fraction:

214=514 -\frac{21}{4}=-5\frac{1}{4}

3

Final Answer

514 -5\frac{1}{4}

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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