5 + 22Â = 9 9 + 33Â = 36 36 + 42Â = 52 52 + 53Â =Â 177 177 + 62Â = 213
LCM of 21 5 , 21 10 and 21 15 is?
(1). 21 5
(2). 21 15
(3).2130
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