Two equivalent fractions of 27/81 are: 1/3 and 2/6
18/18 and 27/27
21/27
27/30 = 9/10
when in doubt choose d
They are: 16/18 and 24/27
20
9/27 and 1/3 are equivalent to 27/81.
27/42 = 9/14 or 18/28
equivalent fractions for 9 over 12 = 3/4, 18/24, 27/36,...
1/9
10 over 18, 15 over 27, etc.