Subtract 21/5 from 30/2
1st number: 15 0/2, 2nd number: 4 1/5
30/2 - 21/5 is 54/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 5 is 10
Next, find the equivalent fraction of both fractional numbers with denominator 10 - For the 1st fraction, since 2 × 5 = 10,
30/2 = 30 × 5/2 × 5 = 150/10 - Likewise, for the 2nd fraction, since 5 × 2 = 10,
21/5 = 21 × 2/5 × 2 = 42/10 - Subtract the two like fractions:
150/10 - 42/10 = 150 - 42/10 = 108/10 - After reducing the fraction, the answer is 54/5
- In mixed form: 104/5
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