Subtract 70/40 from 1/70
1st number: 1/70, 2nd number: 1 30/40
1/70 - 70/40 is -243/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
1/70 = 1 × 4/70 × 4 = 4/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
70/40 = 70 × 7/40 × 7 = 490/280 - Subtract the two like fractions:
4/280 - 490/280 = 4 - 490/280 = -486/280 - After reducing the fraction, the answer is -243/140
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