Subtract 5/4 from 81/70
1st number: 1 11/70, 2nd number: 1 1/4
81/70 - 5/4 is -13/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 4 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
81/70 = 81 × 2/70 × 2 = 162/140 - Likewise, for the 2nd fraction, since 4 × 35 = 140,
5/4 = 5 × 35/4 × 35 = 175/140 - Subtract the two like fractions:
162/140 - 175/140 = 162 - 175/140 = -13/140
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