It is: 63
LCD(9, 3) = 9
LCD(7, 9, 2) = 126.
LCD(7,9,13) = 7*9*13 which is 819
3
lcm(7, 9) = 63 → equivalent fractions are: 3/7 = (3×9)/(7×9) = 27/63 2/9 = (2×7)/(9×7) = 14/63
9 by 5- 3 by 3 by 5 9 by 7 - 3 by 3 by 7 7 by 7. you need to go to The Tutoring Center, I used to work there, Lowest Common Denominators are in the first few pages of their workbooks. The LCD for those three numbers is one. They don't share any other factors
63
63
9
63
9 = 3^2 15 = 3 x 5 21 = 3 x 7 lcm = 3^2 x 5 x 7 = 315
If you mean lcm, it is 36 because 9 x 4 equals 36 and 3 x 12 equals 36.