Subtract 20/80 from 20/7
1st number: 2 6/7, 2nd number: 20/80
20/7 - 20/80 is 73/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 7 × 80 = 560,
20/7 = 20 × 80/7 × 80 = 1600/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
20/80 = 20 × 7/80 × 7 = 140/560 - Subtract the two like fractions:
1600/560 - 140/560 = 1600 - 140/560 = 1460/560 - After reducing the fraction, the answer is 73/28
- In mixed form: 217/28
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