Subtract 28/21 from 20/10
1st number: 2 0/10, 2nd number: 1 7/21
20/10 - 28/21 is 2/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
20/10 = 20 × 21/10 × 21 = 420/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
28/21 = 28 × 10/21 × 10 = 280/210 - Subtract the two like fractions:
420/210 - 280/210 = 420 - 280/210 = 140/210 - After reducing the fraction, the answer is 2/3
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