Subtract 3/70 from 1/81
1/81 - 3/70 is -173/5670.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 70 is 5670
Next, find the equivalent fraction of both fractional numbers with denominator 5670 - For the 1st fraction, since 81 × 70 = 5670,
1/81 = 1 × 70/81 × 70 = 70/5670 - Likewise, for the 2nd fraction, since 70 × 81 = 5670,
3/70 = 3 × 81/70 × 81 = 243/5670 - Subtract the two like fractions:
70/5670 - 243/5670 = 70 - 243/5670 = -173/5670
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