Subtract 21/10 from 75/5
1st number: 15 0/5, 2nd number: 2 1/10
75/5 - 21/10 is 129/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 10 is 10
Next, find the equivalent fraction of both fractional numbers with denominator 10 - For the 1st fraction, since 5 × 2 = 10,
75/5 = 75 × 2/5 × 2 = 150/10 - Likewise, for the 2nd fraction, since 10 × 1 = 10,
21/10 = 21 × 1/10 × 1 = 21/10 - Subtract the two like fractions:
150/10 - 21/10 = 150 - 21/10 = 129/10 - In mixed form: 129/10
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