There is none because the Least Common Denominator (or LCD) refers to the Least Common Multiple (LCM) of the denominators of two or more fractions or mixed numbers. Even if you converted your whole numbers (x) to their fraction equivalents (x/1), the LCD would always be 1.
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To find a common denominator for 7 and 8, we need to find the least common multiple (LCM) of the two numbers, which is 56. Therefore, a proper fraction with a denominator that is common to 7 and 8 would be any fraction with 56 as the denominator, such as 3/56 or 7/56.
A common denominator is 7.A common denominator is 7.A common denominator is 7.A common denominator is 7.
I got 39/56 you have to multiply each fraction by its denominator (4/7 x 8/8 and 1/8 x 7/7) so that way you get a common denominator. then when you multiply them which is (32/56 and 7/56) you add them ultimately getting the answer 39/56. You have to remember that when you add fractions you have to have a common denominator.
The least common factor of 56 and 60 is 1. The greatest common factor of 56 and 60 is 4.
The Least Common Multiple (LCM) of (56,84) is 168