How do i find the lcm
45213
Easiest and most complex proof of $\gcd (a,b) \times \operatorname{lcm} (a,b) =ab.$
65503
Identity involving LCM and GCD: $\frac{[a,b,c]^2}{[a,b][b,c][c,a]}=\frac{(a,b,c)^2}{(a,b)(b,c)(c,a)}$
139833
Prove that $\gcd(M, N)\times \mbox{lcm}(M, N) = M \times N$.
148108
Let $L=\operatorname{lcm}(o(a), o(b))$ and prove that $(ab)^L =e$.
41295
Divisibility, LCM and GCD for fractions (rationals)
142693
$\gcd(a,b) = \gcd(a + b, \mathrm{lcm}[a,b])$
38457
How to find the canonical equations of the RLC circuit
50249
Pairs of numbers with a given LCM
49294
prove that $\operatorname{lcm}(n,m) = nm/\gcd(n,m)$
10966
gcd and lcm from prime factorization proof
105112
Find center of mass and moment applied on beam structure
126039
Find the value of the the term
43849
Calculating number of elements commmuting with $\sigma\in S_{10}$
25174
Solve for $A,B$: $\mathrm{LCM}(A,B)=168$, $\mathrm{HCF(A,B)}=12$
102757
Prove that either $m$ divides $n$ or $n$ divides $m$ given that $\operatorname{lcm}(m,n) + \operatorname{gcd}(m,n) = m + n$?
77278
If $\,\gcd(a,b) = {\rm lcm}(a,b)\,$ then prove $a=b$
1168
find the measure of $AMC$