Solve 38÷(-4)×12÷(-3): Sequential Operations with Negative Numbers

Solve the following equation:

38:(4)12:(3)= 38:(-4)\cdot12:(-3)=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Solve
00:04 Write every division as a fraction
00:18 Make sure to multiply numerator by numerator and denominator by denominator
00:29 Negative times negative always equals positive
00:42 Break down 12 into factors 4 and 3
00:49 Simplify what's possible
00:52 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Solve the following equation:

38:(4)12:(3)= 38:(-4)\cdot12:(-3)=

2

Step-by-step solution

Let's begin by writing the two division exercises as a multiplication of two simple fractions:

(38:(4))×(12:(3))= (38:(-4))\times(12:(-3))=

384×123= \frac{38}{-4}\times\frac{12}{-3}=

Let's proceed to combine them into one exercise:

38×124×3= \frac{38\times12}{-4\times-3}=

Note that in the denominator of the fraction we are multiplying two negative numbers, therefore the result must be positive:

38×124×3= \frac{38\times12}{4\times3}=

Let's now break down the 12 in the fraction's numerator into a multiplication exercise:

38×4×34×3= \frac{38\times4\times3}{4\times3}=

Finally let's reduce the multiplication exercise 4X3 in the numerator and denominator and we should obtain the following:

38 38

3

Final Answer

38 38

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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