\( \begin{array}{ll}\text { Oblener el m.c.m de } & \text { 1) } 2,4,7= \\ \text { i) } 5,10,15= & \text { 12) }, 2,3= \\ \text { 2) } 4,6,8= & \text { 13) } 8,36,44= \\ \text { 3) } 7,19,21= & \text { 14) } 30,60,90= \\ \text { 4) } 6,12,32= & \text { 15) } 5,15,45= \\ \text { 5) } 9,21,27= & \text { 16) } 7,42,63= \\ \text { 5) } 29,36,48= & \text { 171, }, 6,9= \\ \text { 7) } 15,25,30= & \text { 18) } 20,30,40= \\ \text { 8) } 12,18,48= & \text { 19) } 25,50,150= \\ \text { 9) } 16,24,42= & \text { 20) } 39,26,52= \\ \text { 16) } 9,12,56= & \end{array} \)

Para calcular el mínimo común múltiplo (m.c.m.) de los conjuntos de números que has proporcionado, utilizaremos el método de descomposición en factores primos. A continuación, se presentan los cálculos para cada conjunto: 1) **m.c.m(2, 4, 7)**: - 2 = \(2^1\) - 4 = \(2^2\) - 7 = \(7^1\) - m.c.m = \(2^2 \cdot 7^1 = 28\) 2) **m.c.m(4, 6, 8)**: - 4 = \(2^2\) - 6 = \(2^1 \cdot 3^1\) - 8 = \(2^3\) - m.c.m = \(2^3 \cdot 3^1 = 24\) 3) **m.c.m(7, 19, 21)**: - 7 = \(7^1\) - 19 = \(19^1\) - 21 = \(3^1 \cdot 7^1\) - m.c.m = \(3^1 \cdot 7^1 \cdot 19^1 = 399\) 4) **m.c.m(6, 12, 32)**: - 6 = \(2^1 \cdot 3^1\) - 12 = \(2^2 \cdot 3^1\) - 32 = \(2^5\) - m.c.m = \(2^5 \cdot 3^1 = 96\) 5) **m.c.m(9, 21, 27)**: - 9 = \(3^2\) - 21 = \(3^1 \cdot 7^1\) - 27 = \(3^3\) - m.c.m = \(3^3 \cdot 7^1 = 189\) 6) **m.c.m(29, 36, 48)**: - 29 = \(29^1\) - 36 = \(2^2 \cdot 3^2\) - 48 = \(2^4 \cdot 3^1\) - m.c.m = \(2^4 \cdot 3^2 \cdot 29^1 = 3480\) 7) **m.c.m(15, 25, 30)**: - 15 = \(3^1 \cdot 5^1\) - 25 = \(5^2\) - 30 = \(2^1 \cdot 3^1 \cdot 5^1\) - m.c.m = \(2^1 \cdot 3^1 \cdot 5^2 = 150\) 8) **m.c.m(12, 18, 48)**: - 12 = \(2^2 \cdot 3^1\) - 18 = \(2^1 \cdot 3^2\) - 48 = \(2^4 \cdot 3^1\) - m.c.m = \(2^4 \cdot 3^2 = 144\) 9) **m.c.m(16, 24, 42)**: - 16 = \(2^4\) - 24 = \(2^3 \cdot 3^1\) - 42 = \(2^1 \cdot 3^1 \cdot 7^1\) - m.c.m = \(2^4 \cdot 3^1 \cdot 7^1 = 336\) 10) **m.c.m(39, 26, 52)**: - 39 = \(3^1 \cdot 13^1\) - 26 = \(2^1 \cdot 13^1\) - 52 = \(2^2 \cdot 13^1\) - m.c.m = \(2^2 \cdot 3^1 \cdot 13^1 = 156\) 11) **m.c.m(9, 12, 56)**: - 9 = \(3^2\) - 12 = \(2^2 \cdot 3^1\) - 56 = \(2^3 \cdot 7^1\) - m.c.m = \(2^3