Subtract 12/70 from 1/81
1/81 - 12/70 is -451/2835.
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,
12/70 = 12 × 81/70 × 81 = 972/5670 - Subtract the two like fractions:
70/5670 - 972/5670 = 70 - 972/5670 = -902/5670 - After reducing the fraction, the answer is -451/2835
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