Subtract 84/10 from 81/28
1st number: 2 25/28, 2nd number: 8 4/10
81/28 - 84/10 is -771/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 10 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
81/28 = 81 × 5/28 × 5 = 405/140 - Likewise, for the 2nd fraction, since 10 × 14 = 140,
84/10 = 84 × 14/10 × 14 = 1176/140 - Subtract the two like fractions:
405/140 - 1176/140 = 405 - 1176/140 = -771/140
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