Subtract 20/12 from 28/9, Solve 3 1/9

Subtract 20/12 from 28/9

1^st number: 3 1/9, 2^nd number: 1 8/12

28/9 - 20/12 is 13/9.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 12 is 36

Next, find the equivalent fraction of both fractional numbers with denominator 36
For the 1st fraction, since 9 × 4 = 36,
28/9 = 28 × 4/9 × 4 = 112/36
Likewise, for the 2nd fraction, since 12 × 3 = 36,
20/12 = 20 × 3/12 × 3 = 60/36
Subtract the two like fractions:
112/36 - 60/36 = 112 - 60/36 = 52/36
After reducing the fraction, the answer is 13/9
In mixed form: 14/9

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