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Nikitich [7]
3 years ago
12

How do the gcf and the lcm help you when multiplying and adding or subracting fractions

Mathematics
1 answer:
kari74 [83]3 years ago
4 0
<h3>Explanation:</h3>

GCF: the greatest common factor of numerator and denominator is a factor that can be removed to reduce the fraction.

  <em>Example</em>

The numerator and denominator of 6/8 have GCF of 2:

  6/8 = (2·3)/(2·4)

The fraction can be reduced by canceling those factors.

  (2·3)/(2·4) = (2/2)·(3/4) = 1·(3/4) = 3/4

___

LCM: the least common multiple of the denominators is suitable as a common denominator. Addition and subtraction are easily performed on the numerators when the denominator is common.

  <em>Example</em>

The fractions 2/3 and 1/5 can be added using a common denominator of LCM(3, 5) = 15.

  2/3 + 1/5 = 10/15 + 3/15 = (10+3)/15 = 13/15

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A navigator marks three locations on a satellite map as shown. If the distance from Serravalle to San Marino is 982 miles, and t
Solnce55 [7]

                                                                    833
Seravalle____________Chiesanuova______________San Marino
    
             |---------------------------------------------------------------------|
                                          982

so the distance from Chiesanuova to Serravalle is : 
982 - 833 = 149 miles <==
3 0
3 years ago
Read 2 more answers
5/2=? ?/? ill give brainliest
adoni [48]

Answer:

Okay so you jsut gotta divide

5/2 is basically saying 5 divided by 2, the bar basically means divide by.

Now 5/2 is 2.5

2.5 into a mixes is 2 1/2

7 0
3 years ago
(1/2-6)-(1/6x-8) plz i need help for this test
STatiana [176]

Answer:

simplified answer is: -x-15/6

evaluated answer is; -(x-15/6)

Step-by-step explanation: if correct brainliest plz

if wrong i am sorry

6 0
2 years ago
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The function​ s(t) represents the position of an object at time t moving along a line. Suppose s(2)=150 and s(5)=237. Find the a
trapecia [35]

Answer:

29 is answer.

Step-by-step explanation:

Given that the function​ s(t) represents the position of an object at time t moving along a line. Suppose s(2)=150 and s(5)=237.

To find average velocity of the object over the interval of time [1,3]

We know that derivative of s is velocity and antiderivative of velocity is position vector .

Since moving along a line equation of s is

use two point formula

\frac{s-150}{237-150} =\frac{t-2}{5-2} \\s=29t-58+150\\s=29t+92 gives the position at time t.

Average velocity in interval (1,3)

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5 0
3 years ago
How times can 38 go into 7
kaheart [24]
Hmm, this answer is mathematically incorrect. If the question has no errors, 38 can go into 7 0 times, it can't because its bigger than 7. 

However, if it were meant to be the other way round, how many times does 7 go into 38, the answer would be 5. 
6 0
3 years ago
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