Subtract 42/20 from 28/40
1st number: 28/40, 2nd number: 2 2/20
28/40 - 42/20 is -7/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
28/40 = 28 × 1/40 × 1 = 28/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
42/20 = 42 × 2/20 × 2 = 84/40 - Subtract the two like fractions:
28/40 - 84/40 = 28 - 84/40 = -56/40 - After reducing the fraction, the answer is -7/5
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