Subtract 28/20 from 7/2
1st number: 3 1/2, 2nd number: 1 8/20
7/2 - 28/20 is 21/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 2 × 10 = 20,
7/2 = 7 × 10/2 × 10 = 70/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
28/20 = 28 × 1/20 × 1 = 28/20 - Subtract the two like fractions:
70/20 - 28/20 = 70 - 28/20 = 42/20 - After reducing the fraction, the answer is 21/10
- In mixed form: 21/10
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