Subtract 90/28 from 27/40
1st number: 27/40, 2nd number: 3 6/28
27/40 - 90/28 is -711/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 28 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
27/40 = 27 × 7/40 × 7 = 189/280 - Likewise, for the 2nd fraction, since 28 × 10 = 280,
90/28 = 90 × 10/28 × 10 = 900/280 - Subtract the two like fractions:
189/280 - 900/280 = 189 - 900/280 = -711/280
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