Subtract 4/20 from 20/9, Solve 2 2/9

Subtract 4/20 from 20/9

1^st number: 2 2/9, 2^nd number: 4/20

20/9 - 4/20 is 91/45.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 20 is 180

Next, find the equivalent fraction of both fractional numbers with denominator 180
For the 1st fraction, since 9 × 20 = 180,
20/9 = 20 × 20/9 × 20 = 400/180
Likewise, for the 2nd fraction, since 20 × 9 = 180,
4/20 = 4 × 9/20 × 9 = 36/180
Subtract the two like fractions:
400/180 - 36/180 = 400 - 36/180 = 364/180
After reducing the fraction, the answer is 91/45
In mixed form: 21/45

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