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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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Hope this helps you out a little



8 0
3 years ago
What is the number of degrees in the measure of each exterior angle of a regular polygon of 18 sides?
cestrela7 [59]
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6 0
3 years ago
Alguien puede resolver esto (Can you solve this operation plis)
inysia [295]
La respuesta final sería -5/3

8 0
3 years ago
Daniel and Audrey are reading the same book. At the beginning of the month, Daniel was on page 49 and Audrey was on page 22. Dan
dolphi86 [110]

Answer:

202

Step-by-step explanation:

So it has to end in 2 because 20t+22 will always be a 2.

day1:

17x1+49=66

no 2

day2:

17x2+49=83

odd

day3:

D=100

no 2

day4:

odd

day5:

D=134

no 2

etc

keep adding 17 to D until you get one that ends in 2

D=202

A=202

6 0
3 years ago
Help please! Appreciate it much.
sergey [27]
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