1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
monitta
4 years ago
11

How to find the least common denominator of 3 fractions?

Mathematics
1 answer:
Lina20 [59]4 years ago
3 0

Answer:

  Find the LCD of the first two, then the LCD of that and the third one.

Step-by-step explanation:

You can do it by finding the LCD of two of the denominators, then the LCD of that and the third denominator.

Or, you can factor each of the denominators and find their LCM by multiplying the unique factors to their highest powers.

___

<u>Example:</u>

  1/21 + 1/35 + 1/45

The LCD of 1/21 and 1/35 is (21·35)/5 = 105. The LCD of 1/105 and 1/45 is ...

  (105·45)/15 = 315

__

Using factoring ...

  • 21 = 3·7
  • 35 = 5·7
  • 45 = 3²·5

LCD = 3²·5·7 = 315

You might be interested in
Which expression is equivalent to s - 0.78s +0.28s?<br> 0.58<br> 1.5s<br><br> O 1-0.55<br> s – 0.5
Andrej [43]

Answer:

0.5s

Step-by-step explanation:

5 0
4 years ago
The width of a rectangle is the length minus 2 units.The ares of the rectangle is 48 units.What is the width, in units ,of the r
VARVARA [1.3K]

Answer:

x(x - 4) = 12

x2 - 4x = 12

x2 - 4x - 12 = 0

(x - 6)(x + 2) = 0

x - 6 = 0

    x = 6

If the length is 6, the width must be 2.

Step-by-step explanation:

8 0
4 years ago
Amber cut a 20-inch board into some shorter boards.
mylen [45]

Answer:

24 im new im learning english sorry

Step-by-step explanation:

8 0
3 years ago
Select the correct answer from each drop-down menu.
Pie

Answer:

Step-by-step explanation:

Correction: It should say 300/360 instead of 60/360 for sector POR, so you'll need to plug that in your calculator instead.

8 0
3 years ago
Margie is practicing for an upcoming tennis tournament. Her first serve is good 20 out of 30 times on average. Margie wants to k
mojhsa [17]

Answer:

0.6804

Step-by-step explanation:

Given that Margie is practicing for an upcoming tennis tournament. Her first serve is good 20 out of 30 times on average.

Since each trial is independent and there are two outcomes, X no of good serves is binomial with n=6 and p =2/3

Required probability

= Prob that atleast four of 6 times good serve

=P(X\geq 4)

=P(x=4,5 or 6)\\=1-F(3)\\=0.6804

Formula used:

P(X=r) =6Cr (\frac{2}{3}^r )(\frac{1}{3}^{6-r}  )

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the measure of E, in degrees?
    10·1 answer
  • How do i find the volume of this cone?
    14·2 answers
  • Which inequality is true?
    11·1 answer
  • Helppppp meeeeeeeee pleaseeee!!!!
    6·1 answer
  • Is this linear or nonlinear <br> 0,-10<br> 1,-7<br> 2,-4<br> 3,-1
    8·1 answer
  • Complete the square x squared +18x-64=0
    11·1 answer
  • The graph is of a function in the form p(t)=a x b^t. what is the function? (2 points)
    15·1 answer
  • <img src="https://tex.z-dn.net/?f=%20-%2011%20%5Cfrac%7B1%7D%7B5%7D%20%20%5Cdiv%205%20%5Cfrac%7B1%7D%7B4%7D%20" id="TexFormula1"
    7·1 answer
  • 1. Alan has is working
    8·2 answers
  • Alma wants to buy socks. She has $11.00 and the socks cost $3.00 per pair. How many pairs of socks can Alma buy? How much money
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!