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How do you add or subtract rational numbers with common denominators?
Wiki User
∙ 13y ago
you subtract the top 2 numbers and then leave the denominators the same like:
7/8-4/8=3/8. Get it?
Wiki User
∙ 13y ago
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How to add and subtract mixed numbers?
Convert them to improper fractions with common denominators and proceed.
When you subtract fractions do you subtract the denominator?
No. If the denominators are the same, you subtract the numerators. If the denominators are different you have to find the least common denominator.
How do u subtract fractions?
multiply the fractions until they have common denominators and then subtract them
Do you subtract the denominators in a subtraction?
find GCF(Greatest Common Factor) then subtract
What is the process of subtracting fractions?
If the denominators are the same, subtract the numerators. If the denominators are different, convert them to equivalent fractions with a common denominator and subtract the numerators.
How do you add and subtract rational numbers with unlike denominators?
You first find equivalent fractions whose denominators are a common multiple of the different denominators. Teachers like you to use the least common denominator: that is not necessary although it can result in your working with smaller numbers and so make things easier.
How to add and subtract mixed numbers?
Convert them to improper fractions with common denominators and proceed.
When you subtract fractions do you subtract the denominator?
No. If the denominators are the same, you subtract the numerators. If the denominators are different you have to find the least common denominator.
How are common denominator and common multiple alike?
Common denominators are common multiples of two or more denominators.
Do you subtract the denominators in a subtraction?
find GCF(Greatest Common Factor) then subtract
How do u subtract fractions?
multiply the fractions until they have common denominators and then subtract them
When or why would it be useful to know the least common multiple of a set of numbers?
When you are trying to add or subtract fractions with different denominators.
What is the benefit of getting the least common multiple of two or more numbers?
It will enable you to add and subtract fractions with unlike denominators.
How do you subtract Fractions with models unlike denominators?
The denominators need to be the same for subtraction. Find the Least Common Denominator for both items and then subtract.
What is the process of subtracting fractions?
If the denominators are the same, subtract the numerators. If the denominators are different, convert them to equivalent fractions with a common denominator and subtract the numerators.
How do you Add rational expressions with common denominators and binomial numerators?
If the denominator is the same, you just add the numerators - just as with plain numbers.
What do you not have to think about when you add or subtract fractions?
Whether the denominators are common or not.
