Question

Find the LCM of 40,42 and 45

Answer 1

2520.
in order to find the LCM, find the prime factors of all the numbers and then line them up in rows. 
So..
40-5x2x2x2
42-    2x     3x7
45-5x         3x   3
-------------------------
LCM-5x2x2x3x7x3
So that is 2520.

Answer 2

Answer:

its lcm is 2520

Step-by-step explanation:

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