Respuesta :

lovelyrosie

Answer:

[tex]\huge\colorbox{navy}{Answer}[/tex]

[tex]lcm\: of \:7 \:and \:21 = 21 \: \: \: [/tex]

fieryanswererft

Answer:

21 is the l.c.m of 7 and 21

explanation:

[tex]\sf \bold \mathrm{The\:LCM\:of\:}a,\:b\mathrm{\:is\:the\:smallest\:positive\:number\:that\:is\:divisible\:by\:both\:}a\mathrm{\:and\:}b[/tex]

7 :  7

21 : 3 * 7

.

multiply, 7 * 3 = 21 - which is divisible by both 21 and 7