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Nikitich [7]
4 years ago
12

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

Mathematics
1 answer:
kari74 [83]4 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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11050 divided by 26 what the remainder and turn into a fraction
stellarik [79]
11,050 divided by 26 is the remainder of 425. Fraction form it would be 425/1000. (in the 1000th decimal place) To reduce it, you would divide the numerator and denominator by 25 since 25 is the g<span>reatest common divisor. Therefore,</span> it would be 17/40. 
3 0
4 years ago
The hypotenuse of a right triangle measures 15 cm and one of its legs measures 8 cm.
Sever21 [200]
Use Pythagorean theorem
a^2 + b^2 = c^2
C = hypothenuse
8^2 + b^2 = 15^2
64 + b^2 = 225
b^2 = 161
b = square root 161 = 12.68

Solution: 12.7 cm
6 0
3 years ago
The equation of a line is -2x+5y=-20.<br> What is the x-intercept of the line?
fomenos

The x intercept of the given line is (10, 0)

<h3>Finding the x intercept of a line</h3>

The x intercept of a line is the point where the line crosses the x-axis

It is the point where the value of y is zero

Given the equation of a line -2x+5y = -20

Substitute y = 0 into the equation

-2x +5(0) = -20

-2x = -20

x = 10

Hence the x intercept of the given line is (10, 0)

Learn more on x intercept here;brainly.com/question/17932786

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6 0
2 years ago
Laboratory tests show that the lives of light bulbs are normally distributed with a mean of 750 hours and a standard deviation o
BartSMP [9]

Answer:

34

Step-by-step explanation:

5 0
4 years ago
Expresa la razón en su forma más simple:
Tju [1.3M]

Answer:

4:21

Step-by-step explanation:

20:105

dividir ambos por 5

4:21

7 0
3 years ago
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