Subtract 4/70 from 2/81
2/81 - 4/70 is -92/2835.
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,
2/81 = 2 × 70/81 × 70 = 140/5670 - Likewise, for the 2nd fraction, since 70 × 81 = 5670,
4/70 = 4 × 81/70 × 81 = 324/5670 - Subtract the two like fractions:
140/5670 - 324/5670 = 140 - 324/5670 = -184/5670 - After reducing the fraction, the answer is -92/2835
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