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
krek1111 [17]
3 years ago
13

Who do you do the problem 7/9+1/7+3/5? please explain thoroughly.

Mathematics
2 answers:
Artyom0805 [142]3 years ago
8 0

To add those fractions, you must find a common denominator for all of them. To find this, find a number that is a multiple of all three denominators.  Then, multiply the top of the fraction by the same number you multiplied to get the common denominator.  Finally you add all of the numerators together and keep the denomiator the same.

Example: 1/2+1/4+1/8

The demominators all are factors of the multiple 8.  Therefore, we will use 8.  Then, since we multiplied 2 by 4 to get eight for the first fraction, we will multiply the top number by 4 also. The new fraction will look like this: 4/8.  After you have done that to all of the fractions, the equation will look like this: 4/8+2/8+1/8.  Finally add all of the top numbers together and keep the denominator the same.  The answer would be 7/8

Hope this helped :)  Good luck


Evgen [1.6K]3 years ago
4 0
To add fractions you want to make sure that the bottom numbers are the same so we have to make them the same, but we have to make sure that the fractions are unchanged so we get the correct answer

so if we find out what number that 9,7, and 5 can all multiply into. we find that 9 times 7 times 5 or 315 is the number that will work

so to get them to all be over 315, we must multiply each fraction by a form of 1/1 or x/x or (number)/(same numbe as on top)

so 7/9 times (35/35)=245/315
1/7 times (45/45)=45/315
3/5 times (56/56)=168/315

we add them togther
245/315+45/315+168/315=(245+45+168)/315=458/315
this simplifies to 1 and 143/315
You might be interested in
The cost of six hens and one duck at the university poultry farm is GH₵40. While four hens and three ducks cost GH₵36. What is t
Anon25 [30]

Answer:

Step-by-step explanation:

Let's call hens h and ducks d. The first algebraic equation says that 6 hens (6h) plus (+) 1 duck (1d) cost (=) 40.

The second algebraic equations says that 4 hens (4h) plus (+) 3 ducks (3d) cost (=) 36.

The system is

6h + 1d = 40

4h + 3d = 36

The best way to go about this is to solve it by substitution since we have a 1d in the first equation. We will solve that equation for d since that makes the most sense algebraically. Doing that,

1d = 40 - 6h.

Now that we know what d equals, we can sub it into the second equation where we see a d. In order,

4h + 3d = 36 becomes

4h + 3(40 - 6h) = 36 and then simplify. By substituting into the second equation we eliminated one of the variables. You can only have 1 unknown in a single equation, and now we do!

4h + 120 - 18h = 36 and

-14h = -84 so

h = 6.

That means that each hen costs $6. Since the cost of a duck is found in the bold print equation above, we will sub in a 6 for h to solve for d:

1d = 40 - 6(6) and

d = 40 - 36 so

d = 4.

That means that each duck costs $4.

3 0
3 years ago
How do you solve this problem K/2+9=30
bonufazy [111]
11 that is the answer
3 0
3 years ago
Read 2 more answers
I got it wrong and I am doing test corrections. Does anyone know the answer? If you do please reply asap thanks!!
LUCKY_DIMON [66]
Maybe 8 by 14 hope this helps
8 0
3 years ago
Read 2 more answers
Find the common ratio of the sequence 2,8,32,128..
Nezavi [6.7K]
4 because that is what's multiplied throughout
7 0
3 years ago
Read 2 more answers
6<br> TEL<br> X<br> -<br> 4<br> 2<br> 44<br> is it a function or not a function
sukhopar [10]
It’s not a function.
8 0
3 years ago
Other questions:
  • Martha is putting a wallpaper border along the top of four walls in her bedroom. The room is rectangle that measures 12 ft. by 1
    7·1 answer
  • Janessa bought for 4 stamps for $1.48 at this rate how much would 10 stamps cost
    5·1 answer
  • A dog and a cat are 200 meters apart when they see each other. The dog can run at a speed of 30 m/sec, while the cat can run at
    10·2 answers
  • A landscaping business bought 8 rose bushes and 15 daylilies for $193. They went back later and bought 3 more rose bushes and 12
    9·1 answer
  • Please help! THESE ARE ALL MY POINTS! The ribbon on a spool is 10 yards long. How many 6-inch pieces of ribbon can be cut from t
    7·1 answer
  • How many dollars are in one cent
    12·1 answer
  • Miguel has 48 coins. Of the 48 coins, <br> 5<br> 8<br> are dimes. How many of the coins are dimes?
    5·1 answer
  • Write -0.04 as a fraction in simplest form<br>​
    10·1 answer
  • Henlo can i get a debate on wether the furry fandom deseves all the hate it gets or if it should be more appreciated as a fandom
    15·1 answer
  • Simplify 10^9 ÷ 10^7
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!