Subtract 70/81 from 20/7
1st number: 2 6/7, 2nd number: 70/81
20/7 - 70/81 is 1130/567.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 7 × 81 = 567,
20/7 = 20 × 81/7 × 81 = 1620/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
70/81 = 70 × 7/81 × 7 = 490/567 - Subtract the two like fractions:
1620/567 - 490/567 = 1620 - 490/567 = 1130/567 - In mixed form: 1563/567
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