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Only when their GCF is 2.

Q: Can you get the LCM of 2 numbers by multiplying them and then dividing the answer by 2?

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The inverse of multiplying is dividing, so dividing by 2.

It won't work for all numbers. I tried with 1 and got a 0.230769...

you add all numbers and you keep the sign of the bigger number -9

It depends on the numbers. For example, dividing by 1 1/2 (one and a half) is exactly the same as dividing by 3/2, since both represent the same number.In general, if you divide by a larger number, the result will be less.

because there the same

No, taking ½ of a number is the same as dividing it by 2. Dividing a number by ½ is the same as multiplying it by 2.

For any two positive integers x and y, an LCM exists. If it exists, we can identify it.

1/2

The LCM of 2 and 4 is not 8.

It is 84 by multiplying both numbers because 7 is a prime and the prime factors of 12 are 2*2*3

no, dividing a number is halving it, multiplying iy by 2 is doubling it