Subtract 28/35 from 21/12
1st number: 1 9/12, 2nd number: 28/35
21/12 - 28/35 is 19/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 35 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
21/12 = 21 × 35/12 × 35 = 735/420 - Likewise, for the 2nd fraction, since 35 × 12 = 420,
28/35 = 28 × 12/35 × 12 = 336/420 - Subtract the two like fractions:
735/420 - 336/420 = 735 - 336/420 = 399/420 - After reducing the fraction, the answer is 19/20
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