well one way is to multiply them together and you get 120 or you could count up by the largest one until they all go into it for example
6
12
18
24
30
36
42
48
54
60
hint look at the ones that end in 5 or 0 so 5 can go into them and then see if the other one can go into it
in this case 60 is the best answer
The common denominator of any two or more whole numbers, such as 6 5 and 4, 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.
24 and 48 are two possible common denominators for 3/8 and 5/6.
8/9, 5/12, 6/7
1/6 + 4/6 = 5/6. This is correct because both the fractions have common denominators, therefore, all you have to do is add the numerators.
do you mean smallest there's a whole bunch of large common denominators for 7,5 and 6
You cannot add fractions with different denominators because they do not represent the same size parts of a whole. (A half is larger than a third, so you cannot add them together as equals until they are expressed with the same denominator.)When fractions have like denominators, we add the numerators and place them over the denominator, for example:2/7 + 3/7 = (2 + 3)/7 = 5/7We can add fractions with unlike denominators by finding their "least common denominator". For example: 2/3 + 5/6 can both be expressed in terms of a least common denominator (6). Multiply the numerator and denominator by the same number to convert the fraction.2/3 + 5/6 -- multiply the numerator and denominator of 2/3 by 2, and 2/3 = 4/64/6 + 5/6 = 9/6 or 11/2Another example : a common denominator for 3/4 and 1/5 would be 20and 3/4 = 15/20 [ (3 x 5)/(4 x 5) ]while 1/5 = 4/20 [ (1 x 4)/(5 x 4)So 3/4 plus 4/5 would become 15/20 + 4/20 = 19/20.
The greatest common denominator of any set of denominators is infinite.
24 and 48 are two possible common denominators for 3/8 and 5/6.
8/9, 5/12, 6/7
There are infinitely many common denominators. The least of these is 12.
1/6 + 4/6 = 5/6. This is correct because both the fractions have common denominators, therefore, all you have to do is add the numerators.
do you mean smallest there's a whole bunch of large common denominators for 7,5 and 6
3/4 and 5/6. The least common multiple of the two denominators is 12. so the fractions cane be written as 9/12 and 10/12. Since the denominators are the same just compare the numerators and see which one is bigger. 5/6 is bigger than 3/4
You cannot add fractions with different denominators because they do not represent the same size parts of a whole. (A half is larger than a third, so you cannot add them together as equals until they are expressed with the same denominator.)When fractions have like denominators, we add the numerators and place them over the denominator, for example:2/7 + 3/7 = (2 + 3)/7 = 5/7We can add fractions with unlike denominators by finding their "least common denominator". For example: 2/3 + 5/6 can both be expressed in terms of a least common denominator (6). Multiply the numerator and denominator by the same number to convert the fraction.2/3 + 5/6 -- multiply the numerator and denominator of 2/3 by 2, and 2/3 = 4/64/6 + 5/6 = 9/6 or 11/2Another example : a common denominator for 3/4 and 1/5 would be 20and 3/4 = 15/20 [ (3 x 5)/(4 x 5) ]while 1/5 = 4/20 [ (1 x 4)/(5 x 4)So 3/4 plus 4/5 would become 15/20 + 4/20 = 19/20.
30
36
3 1 7 4 + 8 is 8. Remember to change the denominators into common denominators. (3/4 would turn into 6/8)
It means find the LCM of the denominators. In order to add and subtract fractions with unlike denominators, it is necessary to convert them to equivalent fractions with a common denominator. Example: 1/4 + 1/6 The LCM of 4 and 6 is 12. 1/4 = 3/12 1/6 = 2/12