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
Arada [10]
3 years ago
14

If you want to add or subtract fractions, what is the first thing you need to do?​

Mathematics
2 answers:
gregori [183]3 years ago
5 0

Answer:

take lowest common factor

Step-by-step explanation:

nataly862011 [7]3 years ago
3 0

Answer:

Find the least common denominator for both fractions and set up the fractions so they can both contain that same denominator.

Step-by-step explanation:

For example, let's say you want to add the fractions \frac{3}{4} and \frac{2}{7}.

First, you will want to find the least common demoninator.  Write out the multiples for both denominators originally given, in this case 4 and 7.  Let's go up to 4*10 and 7*10:

4: 4,8,12,16,20,24,28,32,36,40

7: 7,14,21,28,35,42,49,56,63,70

Se which number in both sets is the first number to be the same in both sets.  That will be your least common denominator.  In this case, the least comon denominator is 28.

To set the fractions right, you would need to multiply the first fraction, 3/4, by 7/7: \frac{3}{4}*\frac{7}{7}=\frac{21}{28}

Then, you would need to multiply the second fraction, 2/7, by 4/4: \frac{2}{7}*\frac{4}{4}=\frac{8}{28}

Now, since both fractions have a common deonminator now, you can add them togther and simplify afterwards if you need to:

\frac{21}{28}+\frac{8}{28}=\frac{29}{28}=1\frac{1}{28}

And that's it.

You might be interested in
Determine the equivalent system for the given system of equations <br> -2x-3y=7<br> 4x+y= -2
alina1380 [7]

Answer:

ok i will do that

Step-by-step explanation:

8 0
3 years ago
Identify the side lengths of the triangle.
Degger [83]

Answer:

36 36 32

Step-by-step explanation:

6 0
3 years ago
Yoo how yall doinnnnn
ICE Princess25 [194]

Answer:

pretty good tired of the virus stuff but good

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Find the value of x round to the nearest tenth 11.2 12.6 17.5 35.7
Mashcka [7]

Answer: It’s not 17.5 I can tell you that:(( just got it wrong

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is the sales tax
hichkok12 [17]

Answer:

Before Tax Price: $110.00

Sale Tax: 6.10% or $6.71

After Tax Price: ($116.71)

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • A sequence is defined by the recursive formula f(n + 1) = 1.5f(n). Which sequence could be generated using the formula? –12, –18
    11·2 answers
  • M= undefined, through (-3,5)
    15·1 answer
  • The left and page numbers of an open book are two consecutive integers whose sum is 259 find the page numbers
    14·1 answer
  • Tickets to the concert were $2.50 for adults and $1 for students. $1200 was collected and 750 tickets were sold. Write a system
    10·2 answers
  • The circumfrence of a circle is 6<img src="https://tex.z-dn.net/?f=%5Cpi" id="TexFormula1" title="\pi" alt="\pi" align="absmiddl
    14·1 answer
  • Sophie is 3.5 years younger than her brother. She knows that when she is b years old, her brother is b+3.5 years old. Right now,
    13·2 answers
  • Using the graph, determine the coordinates of the x-intercepts of the parabola.
    13·1 answer
  • Please help.........
    7·1 answer
  • The coefficient of y in 2x – 3y is ------------------- (3, -3, 2)
    6·1 answer
  • X y<br> −1 −10<br> 3 14<br><br> y= ?x + (?)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!