Subtract 42/4 from 8/20
1st number: 8/20, 2nd number: 10 2/4
8/20 - 42/4 is -101/10.
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,
8/20 = 8 × 1/20 × 1 = 8/20 - Likewise, for the 2nd fraction, since 4 × 5 = 20,
42/4 = 42 × 5/4 × 5 = 210/20 - Subtract the two like fractions:
8/20 - 210/20 = 8 - 210/20 = -202/20 - After reducing the fraction, the answer is -101/10
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