Subtract 20/70 from 81/50
1st number: 1 31/50, 2nd number: 20/70
81/50 - 20/70 is 467/350.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 70 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 50 × 7 = 350,
81/50 = 81 × 7/50 × 7 = 567/350 - Likewise, for the 2nd fraction, since 70 × 5 = 350,
20/70 = 20 × 5/70 × 5 = 100/350 - Subtract the two like fractions:
567/350 - 100/350 = 567 - 100/350 = 467/350 - In mixed form: 1117/350
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