Subtract 15/7 from 20/70
1st number: 20/70, 2nd number: 2 1/7
20/70 - 15/7 is -13/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 7 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
20/70 = 20 × 1/70 × 1 = 20/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
15/7 = 15 × 10/7 × 10 = 150/70 - Subtract the two like fractions:
20/70 - 150/70 = 20 - 150/70 = -130/70 - After reducing the fraction, the answer is -13/7
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