Subtract 21/20 from 25/35
1st number: 25/35, 2nd number: 1 1/20
25/35 - 21/20 is -47/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 35 × 4 = 140,
25/35 = 25 × 4/35 × 4 = 100/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
21/20 = 21 × 7/20 × 7 = 147/140 - Subtract the two like fractions:
100/140 - 147/140 = 100 - 147/140 = -47/140
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