One fourth is three twelfths. So one twelfth plus three twelfths is four twelfths, which is also one third.
Seven and one twelfth
1/12 + 1/12 = 2/12 or 1/6 in its simplest form
three and one sixth plus one and one twelfth = 39/123 1/6 = [(6 * 3)+1]/6 = (18+1)/6 = 19/619/6 + 1/12= (38 + 1)/12= 39/12
Eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth, eighteenth, nineteenth, twentieth.
There are four twelfths. 4 out of 12 is the same as 1 out of 3. 4/12 = 1/3
One and one twelfth
One fourth is three twelfths. So one twelfth plus three twelfths is four twelfths, which is also one third.
Two twelfths. (1/12 + 1/12 = 2/12)
one third plus one fifth is eight fifteenth
5/12
Seven and one twelfth
one third
1/12 + 1/12 = 2/12 or 1/6 in its simplest form
the ratio of brightness is 16:1
seven and seven twelfth
7/12