Subtract 21/98 from 20/15
1st number: 1 5/15, 2nd number: 21/98
20/15 - 21/98 is 47/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 98 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 15 × 98 = 1470,
20/15 = 20 × 98/15 × 98 = 1960/1470 - Likewise, for the 2nd fraction, since 98 × 15 = 1470,
21/98 = 21 × 15/98 × 15 = 315/1470 - Subtract the two like fractions:
1960/1470 - 315/1470 = 1960 - 315/1470 = 1645/1470 - After reducing the fraction, the answer is 47/42
- In mixed form: 15/42
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