Subtract 15/4 from 72/10
1st number: 7 2/10, 2nd number: 3 3/4
72/10 - 15/4 is 69/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 4 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 10 × 2 = 20,
72/10 = 72 × 2/10 × 2 = 144/20 - Likewise, for the 2nd fraction, since 4 × 5 = 20,
15/4 = 15 × 5/4 × 5 = 75/20 - Subtract the two like fractions:
144/20 - 75/20 = 144 - 75/20 = 69/20 - In mixed form: 39/20
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