Subtract 27/42 from 72/20
1st number: 3 12/20, 2nd number: 27/42
72/20 - 27/42 is 207/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
72/20 = 72 × 21/20 × 21 = 1512/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
27/42 = 27 × 10/42 × 10 = 270/420 - Subtract the two like fractions:
1512/420 - 270/420 = 1512 - 270/420 = 1242/420 - After reducing the fraction, the answer is 207/70
- In mixed form: 267/70
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