Subtract 21/56 from 20/25
20/25 - 21/56 is 17/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 56 is 1400
Next, find the equivalent fraction of both fractional numbers with denominator 1400 - For the 1st fraction, since 25 × 56 = 1400,
20/25 = 20 × 56/25 × 56 = 1120/1400 - Likewise, for the 2nd fraction, since 56 × 25 = 1400,
21/56 = 21 × 25/56 × 25 = 525/1400 - Subtract the two like fractions:
1120/1400 - 525/1400 = 1120 - 525/1400 = 595/1400 - After reducing the fraction, the answer is 17/40
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