Question

cual es el mcm de 9 y 15 , 8, 14y21 , 10,20y45

Answer 1

9 - 15 /3 3- 5/3 1-. 5/5 1-. 1 mcm. =9×5=45 8-14-21/2 4- 7-21/2 2- 7-21/2 1- 7-21/3 1- 7- 7/7 1- 1-. 1/ mcm=2×2×2×3×7=168 10-20-15/2 5-10-15/2 5- 5- 15/3 5- 5- 5/5 1- 1-. 1/ mcm=2×2×3×5=60