answersLogoWhite

0


Best Answer

denominator must be equal that you can perform easy operation in them

User Avatar

simon12

Lvl 4
2y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

13y ago

The denominators must be equal.

This answer is:
User Avatar

User Avatar

Anonymous

Lvl 1
3y ago

Make sure that you have to pass your exam and your parents have the broom on their shoulders, so you have to study hard, from books not internet dumbo.

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: In order to subtract two rational expressions by simply adding their numerators you must make sure that their?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What do you subtract when you have two rational expressions that have a common denominator?

When subtracting you have to make sure that the second numerator is multiplied by -1 so the equation turns into adding. When you add and you already have a common denominator you add the numerators and leave the denominator the same.


How is doing operations with rational expressions similar or different from doing equations with fractions and how can they be used in real life?

How is doing operations (adding, subtracting, multiplying, and dividing) with rational expressions similar to or different from doing operations with fractions?If you know how to do arithmetic with rational numbers you will understand the arithmetic with rational functions! Doing operations (adding, subtracting, multiplying, and dividing) is very similar. When you areadding or subtracting they both require a common denominator. When multiplying or dividing it works the same for instance reducing by factoring. Operations on rational expressions is similar to doing operations on fractions. You have to come up with a common denominator in order to add or subtract. To multiply the numerators and denominators separated. In division you flip the second fraction and multiply. The difference is that rational expressions can have variable letters and powers in them.


How do you minnous fractions?

Subtracting fractions is similar to adding fractions. If the fractions have the same denominator, you subtract the numerators. If the fractions have different denominators, you have to convert to a common denominator first.Subtracting fractions is similar to adding fractions. If the fractions have the same denominator, you subtract the numerators. If the fractions have different denominators, you have to convert to a common denominator first.Subtracting fractions is similar to adding fractions. If the fractions have the same denominator, you subtract the numerators. If the fractions have different denominators, you have to convert to a common denominator first.Subtracting fractions is similar to adding fractions. If the fractions have the same denominator, you subtract the numerators. If the fractions have different denominators, you have to convert to a common denominator first.


How would you find the LCD when adding or subtracting rational expressions with different denominators?

No


What is the difference between adding and subtracting fractions?

to add a fraction, get a common denominator, then add the numerators. example: 2/10+4/5 first get common denominators 2/10+8/10 then add the numerators 10/10 (simplify) 1 to subtract from a fraction, get common denominator, then subtract the numerators. example: 4/5-2/10 first get common denominators 8/10-2/10 then subtract the numerators 6/10 (simplify) 3/5


Rules of adding and subtracting similar fractions?

If the denominators are the same, just add or subtract the numerators. For example, 2/7 + 3/7 = 5/7. am i right?


Adding and Subtracting Rational Expressions?

8-3/x-3+x/x-9=


Can you explain adding and subtracting fractions with like denominators?

When you add or subtract fractions with like denominators, you just add or subtract the numerators and put them over the same denominator. For example, 3/5 - 2/5 = (3 - 2)/5 = 1/5


Why is it important to simplify radical expressions before subtracting or adding and how is adding a radical expression similar to adding a polynomial expression and provide an example?

Why is it important to simplify radical expressions before adding or subtracting? How is adding radical expressions similar to adding polynomial expressions? How is it different? Provide a radical expression for your classmates to simplify..


What is the rule in adding rational numbers?

what is the rule in adding rational numbers


Do you add the denominator?

When adding like fractions, only the numerators are added.


When 2 or more fractions have same denominator?

If you are adding or subtracting fractions with the same denominator, you can add or subtract the numerators and keep the denominator the same. 1/8 + 3/8+ 3/8 = 7/8, for example