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
AfilCa [17]
3 years ago
9

Why do fractions need to have a common denominator before you add or subtract them?

Mathematics
1 answer:
djyliett [7]3 years ago
5 0
Fractions need common denominator to add or subtract them because without denominators a fraction is not a fraction, it is a whole number
Example - 2/8 is a fraction
                but 2 is not a fraction
You might be interested in
Which one is equivalent ​
nlexa [21]
The second one is but i’m so so sure
8 0
2 years ago
Hurry I’ll give 10pts
balandron [24]
The answer to the question is a
4 0
2 years ago
Solve the following system of equations: 2x - y = 7
wlad13 [49]

Answer:

Step-by-step explanation: Not too sure how to explain it this is how you simplify it pretty sure

2x-y=7

+2x    +2x add to both sides to get y alone because it has no friends

___________

-y=7+2x get rid of the negative on the y value

__________

y= -2x -7

5 0
3 years ago
Please Help me.<br> .<br> .<br> .<br> .<br> .
avanturin [10]

Answer:

D

Step-by-step explanation:

x^2+2x-5-(-3x^2-4x+1)

x^2+2x-5+3x^2+4x-1

4x^2+6x-6

6 0
3 years ago
Read 2 more answers
The lengths of sides of a right triangle are 16 meters, 30 meters, and 34 meters. The triangle is dilated by a scale factor of 4
konstantin123 [22]

Answer:

Step-by-step explanation:

to be honest you guy should just use photo math its faster and i you dont need to pay to get answer

4 0
3 years ago
Other questions:
  • Amy has 2/3 pound of jellybeans.if she fills 4 jars with an equal amount of jellybeans, how many pounds are in each jar?
    13·2 answers
  • Which of these is most likely a pair of independent and dependent variables?
    5·1 answer
  • Help!!!!!!!!!!!!!!!!!!
    9·2 answers
  • Multiply the polynomial (x-5)(x^2+4x-2)
    10·2 answers
  • Solve the inequality:<br>|x + 2|&lt;5​
    9·1 answer
  • Forty grams of Iodine 131, a radioactive material, decays according to the equation A(t)=40e^(-0.087t) (t is in days and A is th
    11·1 answer
  • 5 x 4000 step by step for khan
    8·1 answer
  • Robin, Ashley, Joy, and Christina collected 156 acorns to make fall decorations. Robin collected three times as many acorns as A
    5·1 answer
  • I really need help with this<br> "Simplify this equation."
    6·1 answer
  • Please help, I need to do this assignment now!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!