Subtract 20/7 from 18/70
1st number: 18/70, 2nd number: 2 6/7
18/70 - 20/7 is -13/5.
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,
18/70 = 18 × 1/70 × 1 = 18/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
20/7 = 20 × 10/7 × 10 = 200/70 - Subtract the two like fractions:
18/70 - 200/70 = 18 - 200/70 = -182/70 - After reducing the fraction, the answer is -13/5
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