Subtract 72/10 from 28/20
1st number: 1 8/20, 2nd number: 7 2/10
28/20 - 72/10 is -29/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
28/20 = 28 × 1/20 × 1 = 28/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
72/10 = 72 × 2/10 × 2 = 144/20 - Subtract the two like fractions:
28/20 - 144/20 = 28 - 144/20 = -116/20 - After reducing the fraction, the answer is -29/5
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