Subtract 28/30 from 21/2
1st number: 10 1/2, 2nd number: 28/30
21/2 - 28/30 is 287/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 2 × 15 = 30,
21/2 = 21 × 15/2 × 15 = 315/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
28/30 = 28 × 1/30 × 1 = 28/30 - Subtract the two like fractions:
315/30 - 28/30 = 315 - 28/30 = 287/30 - In mixed form: 917/30
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