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Fractions that are not equivalent are dissimilar fractions * * * * * The term is used more commonly to refer to fractions whose denominators are different.
When the denominators of two or more fractions are the SAME, then they can be added or subtracted directly. An easy way is to multiply each denominator by the other (along with its corresponding numerator).
More than that. You need to multiply the whole number, the farctions AND cross multiply the whole numbers and the fractions. Then add together all the answers. Thus, 23/4 * 56/7 = 2*5 + (3/4*6/7) + 2*6/7 + 3/4*5 Actually, it is far simpler to convert the mixed fractions to improper (top heavy) fractions, and then multiply the numerators together to give the numerator of the answer and multiply the denominators together to give the denominators of the answer.
Two or more fractions having different denominators have unlike denominators. To do addition and subtraction operations with fractions, all fractions must be converted to have like denominators before the numerators can be added or subtracted. For example, 1/2 + 5/6 + 3/8 = 12/24 + 20/24 + 9/24 = 41/24 = 1 17/24
a common denominator
Fractions that are not equivalent are dissimilar fractions * * * * * The term is used more commonly to refer to fractions whose denominators are different.
Multiplying the denominators together of two or more unlike fractions will get you a common multiple.
When the denominators of two or more fractions are the SAME, then they can be added or subtracted directly. An easy way is to multiply each denominator by the other (along with its corresponding numerator).
More than that. You need to multiply the whole number, the farctions AND cross multiply the whole numbers and the fractions. Then add together all the answers. Thus, 23/4 * 56/7 = 2*5 + (3/4*6/7) + 2*6/7 + 3/4*5 Actually, it is far simpler to convert the mixed fractions to improper (top heavy) fractions, and then multiply the numerators together to give the numerator of the answer and multiply the denominators together to give the denominators of the answer.
Two or more fractions having different denominators have unlike denominators. To do addition and subtraction operations with fractions, all fractions must be converted to have like denominators before the numerators can be added or subtracted. For example, 1/2 + 5/6 + 3/8 = 12/24 + 20/24 + 9/24 = 41/24 = 1 17/24
The easiest way is to multiply the different denominators together. If you prefer to work with smaller denominators, several methods exist: 1) For small numbers, check different multiples of the largest denominator, until you get one that is a multiple of the other one. 2) Do prime factoring, and then multiply together all prime numbers that appear at least in one of the denominators. 3) Factoring can be complicated for large numbers; euclids algorithm is much more efficient in this case.
You must have 2 fractions or more to have unlike fractions. They are fractions with different denominators such as 7/8 and 1/2. Like fractions would have the same denominator like 7/8 and 4/8.
In actual problems, we convert two (or more) fractions so that they have equal denominators.
That means that two or more fractions have the SAME denominator.
a common denominator
Common denominators are common multiples that are being used as denominators.
Any two (or more) fractions whose denominators are different.