Subtract 42/4 from 28/20
1st number: 1 8/20, 2nd number: 10 2/4
28/20 - 42/4 is -91/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 4 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 4 × 5 = 20,
42/4 = 42 × 5/4 × 5 = 210/20 - Subtract the two like fractions:
28/20 - 210/20 = 28 - 210/20 = -182/20 - After reducing the fraction, the answer is -91/10
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