Subtract 3/8 from 21/9, Solve 2 3/9

Subtract 3/8 from 21/9

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

21/9 - 3/8 is 47/24.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 8 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 9 × 8 = 72,
21/9 = 21 × 8/9 × 8 = 168/72
Likewise, for the 2nd fraction, since 8 × 9 = 72,
3/8 = 3 × 9/8 × 9 = 27/72
Subtract the two like fractions:
168/72 - 27/72 = 168 - 27/72 = 141/72
After reducing the fraction, the answer is 47/24
In mixed form: 123/24

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