It is the same as 6 times 2.5 = 15
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Let the number be x:- If: x/2+2.5x = 18 Then: x = 6 Check: 6/2+(2.5*6) = 18
one and a half 1/3 = 2/6 1/2 = 3/6 so 2/6 + 1/6 = 3/6 = 1/2
2 and 6 are prime factors of 72 2 times 6 times 6 = 72
Well, isn't that just a happy little fraction we have here! If we look at 6 and a half, we can see that it can be written as 13/2. You see, we simply put the whole number, 6, over the denominator, which is 2, and then add the remaining half to get 13/2. Just remember, there are no mistakes in fractions, only happy accidents!
(1/2) - (1/3) = (3/6) - (2/6) = 1/6