Subtract 7/10 from 21/5
1st number: 4 1/5, 2nd number: 7/10
21/5 - 7/10 is 7/2.
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,
21/5 = 21 × 2/5 × 2 = 42/10 - Likewise, for the 2nd fraction, since 10 × 1 = 10,
7/10 = 7 × 1/10 × 1 = 7/10 - Subtract the two like fractions:
42/10 - 7/10 = 42 - 7/10 = 35/10 - After reducing the fraction, the answer is 7/2
- In mixed form: 31/2
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