Find the LCM by common division method. (a) 12, 15, 45 (b) 24, 90, 48 (c) 30, 24, 36, 16 (d) 16, 48, 64 (e) 35, 49, 91 (1) 20, 25, 30 (g) 12, 16, 24, 36 (h) 40, 48, 45
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Answer:
a.
12,15,45 |5
12,3,9. |3
4,1,3|
LCM=5*3*4*3=180
b.
24,90,48 |2
12,45,24 |3
4,15,8. |5,2
2,3,4. |2
1,3,2
LCM=2*3*5*2*2*2*3=720
c.
30,24,36,16 |2
15,12,18,8 |3
5,4,6,8 |5,2
1,2,3,4. |2
1,1,3,2
LCM=2*3*5*2*2*2*3=720
d.
16,48,64 |2
8,24,32 |2
4,12,16 |2
2,6,8 |2
1,3,4
LCM=2*2*2*2*2*2*3=192
e.
35,49,91 |13,7
5,7,7. |
LCM=13*7*7*7*5=22295
f.
20,25,30 |5
4,5,6 |3,2
2,5,2
LCM=5*3*2*5*2=300
g.
12,16,24,36|2
6,8,12,18. |3
2,8,4,6 |2
1,4,2,3. |2,3
1,2,1,1
LCM=2*3*2*2*3*2=144
h.
40,48,45 |2
20,24,45 |5
4,24,9. |3
4,8,3. |2
2,4,3 |2
1,2,3
LCM=2*3*5*2*2*2*3=720
Step-by-step explanation:
you should do by calculater it's very long
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