Subtract 40/25 from 28/20
1st number: 1 8/20, 2nd number: 1 15/25
28/20 - 40/25 is -1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 25 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 20 × 5 = 100,
28/20 = 28 × 5/20 × 5 = 140/100 - Likewise, for the 2nd fraction, since 25 × 4 = 100,
40/25 = 40 × 4/25 × 4 = 160/100 - Subtract the two like fractions:
140/100 - 160/100 = 140 - 160/100 = -20/100 - After reducing the fraction, the answer is -1/5
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