Subtract 21/56 from 45/20
1st number: 2 5/20, 2nd number: 21/56
45/20 - 21/56 is 15/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 20 × 14 = 280,
45/20 = 45 × 14/20 × 14 = 630/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
21/56 = 21 × 5/56 × 5 = 105/280 - Subtract the two like fractions:
630/280 - 105/280 = 630 - 105/280 = 525/280 - After reducing the fraction, the answer is 15/8
- In mixed form: 17/8
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