Subtract 21/56 from 45/18
1st number: 2 9/18, 2nd number: 21/56
45/18 - 21/56 is 17/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 18 × 28 = 504,
45/18 = 45 × 28/18 × 28 = 1260/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
21/56 = 21 × 9/56 × 9 = 189/504 - Subtract the two like fractions:
1260/504 - 189/504 = 1260 - 189/504 = 1071/504 - After reducing the fraction, the answer is 17/8
- In mixed form: 21/8
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