Question

lowest lcm

Answer 1

\[14a^{3},15abc ^{3},12b ^{3}\]

Answer 2

14a^3= 7*2*a^3 (Product of its primes)
15abc^3= 3*5*a*b*c^3 "" " "
12b^3 = 2*2*3 b^3 again prod of primes
So, LCM must have all factors to achieve each product using each one LEAST # of times. Two 2's one 3 one 5 one 7, three a's, three b's and three c's...
420a^3b^3c^3