Subtract 27/10 from 18/70
1st number: 18/70, 2nd number: 2 7/10
18/70 - 27/10 is -171/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 10 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 10 × 7 = 70,
27/10 = 27 × 7/10 × 7 = 189/70 - Subtract the two like fractions:
18/70 - 189/70 = 18 - 189/70 = -171/70
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