The value of x would equal 55
The GCF of 18 and 24 is 6. And the GCF of 10 and 90 is 18.
Hope this helps! :D
-TanqR
Answer:

Step-by-step explanation:
Using the hint, write a and b in the following prime factorization:
where
for i ≠ j.
Then by the formulae for gcd(a,b) and lcm(a,b) we know that:


Note that the expression
for all i, since if the minimum is, <em>without loss of generality</em>,
, then the maximum must be
, and viceversa. Then, it is straightforward to verify that when we multiply gcd(a, b) and lcm(a, b) its prime factorization matches the prime factorization of ab, and so we can see the equaility holds:

Answer:
12 and 30
Step-by-step explanation:
HFC:
6
12
18
24
30
LCM:
30
60
-------
12
24
36
48
60