Subtract 21/10 from 2/4
1st number: 2/4, 2nd number: 2 1/10
2/4 - 21/10 is -8/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
2/4 = 2 × 5/4 × 5 = 10/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
21/10 = 21 × 2/10 × 2 = 42/20 - Subtract the two like fractions:
10/20 - 42/20 = 10 - 42/20 = -32/20 - After reducing the fraction, the answer is -8/5
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