The least common denominator (LCD) is 1.
LCD(13, 16) = 208
It is: 105
It is: 462
20
LCD(49, 21) = 147
the LCD is the LCM (least common multiple) of the two number which is 105 in this case
13/15 = 65/75 21/25 = 63/75 13/15 is bigger.
13/14 ÷ 21/2 = 13/147
15+6 is 21. 13 + what is 21? 21 - 13 is 8 Eight
No, they are integers. If they were denominators, their LCD would be 42.
It is: 294 which is the same as its LCM