One thing I learned in math 10 is finding the LCM (lowest common multiple) which is just finding the first number two numbers meet at once multiplying. The way to find it is to first do a factor tree for both of the number to find out what prime numbers make up the number, then put the prime numbers from the first number in a line, then check off what prime numbers the other number has and for the ones that the first one didn’t have add that to the line and multiply. Multiply all of the factors on the line together and you have your lowest common multiple.

Its a pretty easy process to do with the only things you have to do is, to find the prime factors, then the numbers from the first number and check off which numbers you do have, and if a factor from the second number is not on there, then you add it to the line. The last step is to multiply and you will see your LCM.