The common denominator of any two or more whole numbers, such as 3 and 7, will always be one (1) because 'common denominator' refers to the denominators of two or more fractions or mixed numbers, not whole numbers. So, a set of whole numbers (x,x) would have to be converted to their fraction equivalents, i.e., x/1, which will always yield a denominator of 1.
There are infinitely many common denominators. The smallest of these is 42.
7/8 and 1/8 have common denominators
They are not fractions, so they do not have denominators.
Denominators which have no common factors
The common denominator of any two or more whole numbers, such as 9 7 and 3, will always be one (1) because 'common denominator' refers to the denominators of two or more fractions or mixed numbers, not whole numbers. So, a set of whole numbers (x,x) would have to be converted to their fraction equivalents, i.e., x/1, which will always yield a denominator of 1.
Only 1.
70
3 1 7 4 + 8 is 8. Remember to change the denominators into common denominators. (3/4 would turn into 6/8)
50
you subtract the top 2 numbers and then leave the denominators the same like: 7/8-4/8=3/8. Get it?
1/7+1/3 first get common denominators 3/21+7/21 add the numerators 10/21
15
28
The Least Common Denominator (or LCD) is the Least Common Multiple (LCM) of the denominators of a pair of fractions. I assume the 7 and 21 are the denominators of two fractions you need to add or subtract.LCD(7, 21) = 21.
There are infinitely many common denominators. The smallest of these is 42.
7/8 and 1/8 have common denominators
Find the LCM of the denominators. Since the LCM of 3 and 4 is 12, the least common denominator of 1/3 and 1/4 is 12.