Subtract 42/36 from 20/9, Solve 2 2/9

Subtract 42/36 from 20/9

1^st number: 2 2/9, 2^nd number: 1 6/36

20/9 - 42/36 is 19/18.

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

Next, find the equivalent fraction of both fractional numbers with denominator 36
For the 1st fraction, since 9 × 4 = 36,
20/9 = 20 × 4/9 × 4 = 80/36
Likewise, for the 2nd fraction, since 36 × 1 = 36,
42/36 = 42 × 1/36 × 1 = 42/36
Subtract the two like fractions:
80/36 - 42/36 = 80 - 42/36 = 38/36
After reducing the fraction, the answer is 19/18
In mixed form: 11/18

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