What is the lowest common denominator of 1/12 & 1/15

Well lets think of the first number that can fit 12, well 60 works right?? 12 fits in 60 5 times does it work with 15, yes it does, 15 fits in 60 4 times, but is that our smallest number lets check it our lets ssubtract 12 from 60, it is 48 is there a number that multioplied by 15 that can give you 48?? NO!! lets subtract 12 more this gives u 36 can something fit? NO! lets take 12 more and get 24 does anything multiplied by 15 give you 24?? No! so our smallest number would be 60 because nothing else can work for both of this nubers

Hope this helps

D

Step-by-step explanation:

10*20=200

200 + 1020= 1220

Works for the first one

20*20=400

400+ 1020=1420

Works for the second one

30*20=600

600+1020=1620

Works for the third one, and all the others one so forth.

You take the number on the left (10, 20, 30, 40, 50, 60, 70) and times it by 20, replacing the x in the equation with the number on the left side of the table. Then you add the number from said equation to result of the multiplication from the first step.