Subtract 81/70 from 81/12
1st number: 6 9/12, 2nd number: 1 11/70
81/12 - 81/70 is 783/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
81/12 = 81 × 35/12 × 35 = 2835/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
81/70 = 81 × 6/70 × 6 = 486/420 - Subtract the two like fractions:
2835/420 - 486/420 = 2835 - 486/420 = 2349/420 - After reducing the fraction, the answer is 783/140
- In mixed form: 583/140
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