Question

mcm de 15 21 y 42 por favor​

Answer 1

$15 = 3 \times 5 \\ 21 = 3 \times 7 \\ 42 = 2 \times 3 \times 7 \\ M.C.M.(15,21,42) = 2 \times 3 \times 5 \times 7 = 210$