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how can we help?
i just need help with my math its least common multiple
do you have any examples you would like to work on or should we start working on random ones?
i have one its the least common multiple of 8 and 20 its iether 2 or 4
Ok, are you sure that you are trying to find the least common multiple or the greatest common factor?
least common multiple it says it on the paper my teacher hand this to me and two others and told me i need it in by monday or i fail
ok well least common multiple is a number that is BIGGER than the two numbers you have and both of the numbers you have can be multiplied into it
since 2 and 4 are smaller than both 8 and 20, we know they cannot be LCMs of them
this is all confusing to me
a least common multiple can also be the same as the biggest of the numbers that you have
well lets look at the name itself then:
least means smallest common means that both relate to it and multiple means that if you multiply either of the numbers you have, you will get a multiple
so a least common multiple is the smallest number that both of the numbers you have, can fit into a certain amount of times
im just confused becuase i dont get how you find it
and my teacher is no help
ok well we know that it has to be at least the value of the biggest number you have
so lets start their, and after we work through the most basic methods of finding a LCM, we can work on faster methods
so 20 is the bigger of the two numbers (8 and 20)
but 8 doesnt divide into 20 without a remainder or a decimal
so that wont work
why is math so cunfusing
the next one we have is 40, because no number in between 20 and 40 will divide by 20, we have to jump all the way to 40
it isint, it just takes practice
so, is 40 divisible by 8?
then that is your least common multiple, see how we started at 20, because it was the farthest down we can go without being lower than 8 and 20, and because it wasnt divisible by 8 we had to go up, and the next available number that was STILL divisible by 20 was 40, we went to 40, and 40 is divisible by both 20 and 8
now what about 120 and 5
well lets start at 120, because that is the lowest we can go right?
anything lower than 120 will be LESS than our two numbers (120 and 5) so we can NOT go lower than 120
so, we start at 120, is 120 divisible by 5?
there ya go!
wut i have no idea what is going on
ok well do you get why we started at 120?
remember the definition of a LCM, it has to be bigger than both of your numbers or the same as the biggest of your numbers
we have 5 and 120, since a LCM has to be bigger than both or equal to the biggest, it has to be at least 120
i still dont get this al the numbers just look like letters to me
literally like letters, or youre just confused?
wait nevermind i wus looking at my english homework
i have alot of homework
well how about we finish math first, since it is more important (you dont want to fail) and since you have me available and i have to go eventually
i have to go right now cuz its 11:00 and i have somewhere to go tomarrow
so then you dont want to learn how to find LCMs?