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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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storchak [24]

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(4/(x-2))+(1/((x^2)-4))=(1/(x+2)

Answer:

A: She found one valid solution and no extraneous solutions.

Step-by-step explanation:

When solving you get x= -(11/3)

8 0
2 years ago
Need the answer for my hw
andrew-mc [135]
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5 0
2 years ago
Is 5/11 closer to 0, 1, 1/2
Levart [38]

Answer:

If your rounding up, its 1/2

Step-by-step explanation:

6 0
3 years ago
( 2x + 1 ) + ( 3x+2 ) =
MrRa [10]

Answer: 5x+3

Let's go over this problem step by step:

First, you need to combine all the line terms.

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Next, you get this equation:

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2x and 3x is 5x. 1 and 2 is 3.

So your final answer is 5x+3.

7 0
3 years ago
The length of a rectangular garden is three feet less than twice it’s width. If the perimeter of the garden is 42 feet, what is
Masja [62]

Answer:

The length of a rectangular garden is: 13 feet

Step-by-step explanation:

You have 2 lengths that are 2x-3 feet, and 2 widths that are x.

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3 0
3 years ago
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