Help me!!!!! I have this LCM proplems with an "s" about 15 problems Please I give you best answer?

Question

1. 13, 5, 17
2. 24, 16, 9
3. 15,20, 30
4.12, 25, 18
5. 36,80,75
6. 8, 52, 65
7.14,21, 35
8.24, 36,48
9.15, 18,24
10. 6, 16, 26
11. 150, 375
12.111, 112

Answer 1

that's a tedious amount of homework.
1) 13, 5 , 17 have no common factors so the LCM is their product 13x5x17= 1105
2) 24 , 16 ,9 have common factors which you divide out starting with 3, leaving 8,16,3 and then by 8 leaving 1,2, 3so the Lcm is 3x8x2x3=144
3) 15 ,20, 30 divided by 5 gives 3,4,6 which divided by 2 gives 3,2,3 which divided by 3 gives 1,2,1 so the LCM is 5x2x3x2=60
4) 12, 25,18 div by 2 gives 6,25,9 div by 3 gives 2,25,3 which have no further common factors so
LCM = 2x3x2x25x3=900.
5) 36, 80,75 div by 4 gives 9,20,75
div by 3 gives 3, 20,25
div by 5 gives 3, 4, 5
so LCM = 4x3x5x3x4x5 = 3600
6) 8, 52,65 div by 4 gives 2,13,65
div by 13 gives 2,1,5
so LCM is 4x13x2x5 = 520
7) 14 , 21, 35 div by 7 gives 2,3,5
So LCM os 7x2x3x5 = 210
8) 24, 36, 48 div by 12 gives 2,3,4
div by 2 gives 1,3,2
So LCM is 12x2x3x2 =144
9) 15,18,24 div by 2 gives 15,9,12
div by 3 gives 5,3,4
So LCM is 2x3x5x3x4 =360
10) 6,16,26 div by 2 gives 3,13,23
So LCM is 2x3x13x23 =1794
11) 150, 375 div by 5 gives 30, 75
div by 5 gives 6,15
div by 3 gives 2,5
So LCM is 5x5x3x2x5 = 750
12) 111 ,112 have no common factors so their LCM is 111x112 which you could calculate as I don't have a calculator right now.
have fun.

Answer 2

1. all are primes, so 5*13*17 = 1105
2. 24 = 2*2*2*3; 16 = 2*2*2*2; 9 = 3*3. LCM = 2*2*2*2*3*3 = 144
3. 15 = 3*5; 20 = 2*2*5; 30 = 2*3*5. LCM = 2*2*3*5 = 60
4. 12 = 2*2*3; 25 = 5*5; 18 = 2*3*3. LCM = 2*2*3*3*5*5 = 900
5. 36 = 2*2*3*3; 80 = 2*2*2*2*5; 75 = 3*5*5. LCM = 2*2*2*2*3*3*5*5 = 3600
6. 8 = 2*2*2; 52 = 2*2*13; 65 = 5*13. LCM = 2*2*2*5*13 = 520
7. 14 = 2*7; 21 = 3*7; 35 = 5*7. LCM = 2*3*5*7 = 210
8. 24 = 2*2*2*3; 36 = 2*2*3*3; 48 = 2*2*2*2*3. LCM = 2*2*2*2*3 =144
9. 15 = 3*5; 18 = 2*3*3; 24 = 2*2*2*3. LCM = 2*2*2*3*5 = 120
10. 6 = 2*3; 16 = 2*2*2*2; 26 = 2*13. LCM = 2*2*2*2*3*13 = 624
11. 150 = 2*3*5*5. 375 = 3*5*5*5. LCM = 2*3*5*5*5 = 750
12. 111 = 3*37; 112 = 2*2*2*2*7. LCM = 2*2*2*2*3*7*37 = 12,432