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What is the least common denominator of 20 and 25?
There is none because the Least Common Denominator (or LCD) is the Least Common Multiple (LCM) of the denominators of a pair of fractions.
What are two fractions whose least common denominator is 20?
1/2 3/2
What are two fractions who least denominator is twenty?
4 and 5 because the lowest number they have in common is 20.
What is the common factor for 2 over 5 and 3 over 4?
Both of those fractions are in their simplest form, which means they have a GCF of 1. The least common denominator is 20.
How do we add dissimilar fraction?
The first step it to find a common multiple to the denominators. The least common denominator is preferable because it is small but it is not necessary to find the least one. Next, convert each fraction into an equivalent factor with the common multiple as its denominator. Add together all the numerators and place this over the common denominator. Finally, simplify the answer, if possible.For example1/4 + 1/5 + 1/6Find a common multiple: 4*5*6 = 120 (which is also the LCM).Find equivalent fractions: 1/4 = 30/120, 1/5 = 24/120 and 1/6 = 20/120So 1/4 + 1/5 + 1/6 = (30 + 24 + 20)/120 = 74/120Simplify to 37/60.
