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Addition or subtraction of fractions require "like" fractions: that is, fractions with the same denominator.

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โˆ™ 2017-08-04 10:18:30
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A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

The sum or difference of p and q is the of the x-term in the trinomial

A number a power of a variable or a product of the two is a monomial while a polynomial is the of monomials

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Q: Why do you have to find a common denominator?
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How do you find the common denominator of 3 fractions?

Pick two of the fractions and find the Least Common Multiple of those two denominators. Then take that number, and find the Least Common Multiple between that and the third denominator. This number will be the Least Common Denominator between the three fractions.If you don't care to find the Least common denominator, then just take the three denominators, and multiply them together.


Find the least common denominator?

The way that you can find the least common denominator is by first multiplying the 2 bottom numbers and whatever the product is that is your common denominator. to find the smallest one, you have to keep dividing it till it is in counting order or there is an odd number.


What is the common denominator of 56 and 7?

A common denominator is 7.A common denominator is 7.A common denominator is 7.A common denominator is 7.


Why do you think it is important to know how to find the common denominator of two rational polynomials?

You need to find the common denominator in order to add or subtract them. You can only add or subtract "like things" and by finding a common denominator you make both rational expressions into things that can be added or subtracted.


How do you find Greatest common denominator?

It's very difficult to find the greatest common denominator, mainly becausethere is no such thing.The one that people are always trying to find is the least common denominator.That means the smallest one, and that's the one you need to be learning howto find.

Related questions

How do you keep the denominator the same?

you find the common denominator


Find a common denominator for the pair of fractions. Then, write equivalent fractions with the common denominator?

Find google


Is it always necessary to find the least common denominator to compare the sizes of fractions?

When comparing fractions you must find a common denominator; by finding the least common denominator it will keep the numbers (numerators and denominator) smaller .


How do you add improper fractions if the denominator can't multiply into the other denominator?

You Ned to find a larger common denominator or multiply the denominators to gain a common denominator.


Do you have to find the common denominator when you multiply?

No.


Where is a denominator used?

Many places, but a common one is in adding fractions where we find a common denominator.


What is the least common denominator of 9?

You need at least two numbers to find a common denominator.


What is the common denominator for 1734 and 15?

You can always find a common denominator by multiplying the denominators together.


What goes into 4 and 7 to find a common denominator?

To find a common denominator, it's what 4 and 7 go into, and that's 28.


Does NINETY have a common denominator?

You need at least two numbers to find something in common. 90 can be a common denominator of other numbers, but it can't have a common denominator all by itself.


What is the least common denominator for 9 tenths?

You need at least two fractions to find a common denominator.


Do you have to find the lcd when comparing them or can you use any common denominator?

For the sake of comparison, any common denominator will do.

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