Subtract 4/20 from 72/54
1st number: 1 18/54, 2nd number: 4/20
72/54 - 4/20 is 17/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 54 × 10 = 540,
72/54 = 72 × 10/54 × 10 = 720/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
4/20 = 4 × 27/20 × 27 = 108/540 - Subtract the two like fractions:
720/540 - 108/540 = 720 - 108/540 = 612/540 - After reducing the fraction, the answer is 17/15
- In mixed form: 12/15
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