Only in one case. The LCM of 1 and 1 is 1.
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The least common multiple of 9 and 25 is 1.
The Least Common Multiple (LCM) for 7 8 1 6 is 168.
Here is how you can do that.1) First, use the usual procedure to find the least common multiple of that number. 2) Divide the smallest 4-digit number (1000) by the result of step 1. Round this number up to the nearest integer. 3) Multiply the least common multiple (from step 1) by the result of step 2.
The least common multiple of two numbers is their product divided by their greatest common factor. Since 7 is a prime number and 27 is not a multiple of 7, their greatest common factor is 1. The least common multiple is 7 x 27 ÷ 1 = 189.
If I wanted to be nasty about it, I would say 1, because the least common denominator of 45/1 and 75/1 is 1. The least common denominator of two fractions is the least common multiple of their denominators. I presume you are asking for the least common multiple of 45 and 75, which is 225.