Use a factor tree. 364 182,2 91,2,2 13,7,2,2 2 x 2 x 7 x 13 = 364
90/2 = 45/3 = 15/3 = 5/5 = 1 2 x 3 x 3 x 5 = 90
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Pairs of positive integer factors of 90 are:1 x 90 = 902 x 45 = 903 x 30 = 905 x 18 = 906 x 15 = 909 x 10 = 90And their reverses. Therefore, the positive integer factors of 90 are: 1 2 3 5 6 9 10 15 18 30 45 90.
3 x 5 = 15 15 x 6 = 90 Answer: 90
The LCM would be 90... 6 x 15 = 90 15 x 6 = 90 & 18 x 5 = 90
2 x 2 x 7 x 13 = 364
The LCM of 15 and 18 is 90, which is the multiple of the highest power of prime factors from both numbers (2 x 32 x 5 = 2 x 3 x 3 x 5 = 90).
Use a factor tree. 364 182,2 91,2,2 13,7,2,2 2 x 2 x 7 x 13 = 364
1 x 90, 2 x 45, 3 x 30, 5 x 18, 6 x 15, 9 x 10 = 90
90. 5 = 5 9 = 32 15 = 3 x 5 18 = 2 x 32 lcm = 2 x 32 x 5 = 90
90 x 1 = 90 10 x 9 = 90 45 x 2 = 90 30 x 3 = 90 18 x 5 = 90 15 x 6 = 90
2 x 3 x 3 x 5 = 90
1 x 90, 2 x 45, 3 x 30, 5 x 18, 6 x 15, 9 x 10 = 90
90 = 1 x 90 90 = 2 x 45 90 = 3 x 30 90 = 5 x 18 90 = 6 x 15 90 = 9 x 10
1 x 90, 2 x 45, 3 x 30, 5 x 18, 6 x 15, 9 x 10, 10 x 9, 15 x 6, 18 x 5, 30 x 3, 45 x 2, 90 x 1 = 90
90 = 1 x 90, 2 x 45, 3 x 30, 5 x 18, 6 x 15, 9 x 10, 10 x 9, 15 x 6, 18 x 5, 30 x 3, 45 x 2, 90 x 1.