Subtract 72/15 from 21/2
1st number: 10 1/2, 2nd number: 4 12/15
21/2 - 72/15 is 57/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 15 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 15 × 2 = 30,
72/15 = 72 × 2/15 × 2 = 144/30 - Subtract the two like fractions:
315/30 - 144/30 = 315 - 144/30 = 171/30 - After reducing the fraction, the answer is 57/10
- In mixed form: 57/10
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