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When adding or subtracting two fractions with denominators that are not equal what is the first step you take?
Wiki User
∙ 7y ago
The first step to take is find the lowest common denominator of the fractions which can be done by finding the lowest common multiple of the numbers.
Wiki User
∙ 7y ago
Wiki User
∙ 7y agoYou need to find a common denominator. Then you need to convert them to equivalent fractions with this common denominator.
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Are the set of positive fractions closed under division?
Yes, because for any x and y that are positive fractions (y not equal to zero), x/y is also a positive fraction. Note that whole numbers are considered fractions with denominators of 1 -- otherwise it doesn't work.
How do you add unlike denominators?
When there are different denominators in fractions, to add them, it is necessary to find a common denominator. Usually this occurs by multiplying them, such as 1/3 + 1/2 would equal 2/6 + 3/6, which becomes 5/6.
In order to subtract two rational expressions by simply adding their numerators you must make sure that their?
denominator must be equal that you can perform easy operation in them
How do you borrow fractions?
This is done when subtracting mixed fractions. Here you subtract the whole part and the fractional part separately; but if you have a case such as, for example, 5 2/6 - 3 3/6 in the first number, you can "borrow" one whole, which in this case is equal to 6/6; that is, you subtract it from the whole part and add it to the fractional part, thus converting the subtraction to: 4 8/6 - 3 3/6 Now you should have no trouble subtracting the whole part and the fractional part separately.
Why does the butterfly method work when comparing fractions?
it works when comparing fractions by multiplying the fractions to see whitch one is greater not greater and equal
What are the rules for subtracting fractions?
You multiply the fractions until the denominators are equal. Then, you subtract.
What are the step in subtracting disimilar fraction?
Same as for adding: If the denominators are not equal, you must first find a common denominator, then convert both fractions to that common denominator.
How do you know when two fractions are equal?
If the denominators (bottom numbers) are not equal, making equivalent fractions of them so that the denominators are equal. With the denominators equal if the numerators (top numbers) are equal, then the fractions are equal.
How are equivalent fractions used in renaming when subtracting?
When subtracting one fraction to another, one or both fractions are renamed so that they have the same denominators. Then the result of the subtraction is the equal to the subtraction of the numerators divided by the common denominator.
What is it called when you are determining if a fraction is greater than less than or equal to?
adding and subtracting fractions is what it means. also it is definitions
When you add or subtract fractions with unlike denominators why do you have to find LCM?
Because to add fractions, the denominators must be equal.
What are fractions that are equal in value but may have different numerators and denominators?
Equivalent fractions.
What are fractions that are equal in value but have different numerators and denominators?
They are known as equivalent fractions
What are the characteristics of improper fractions?
Improper fractions have numerators that are greater than or equal to their denominators.
Fractioins that are equal in value but may have different numerators and denominators?
equal fractions
Two or more fractions that are equal is called what?
In actual problems, we convert two (or more) fractions so that they have equal denominators.
Why dosent 1over2 1 over 3 equal 2over5?
Because when adding or subtracting fractions the denominators must be the same by finding the lowest common denominator and changing the numerator accordingly so 1/2+1/3 becomes 3/6+2/6 = 5/6
