Subtract 42/8 from 20/28
1st number: 20/28, 2nd number: 5 2/8
20/28 - 42/8 is -127/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 28 × 2 = 56,
20/28 = 20 × 2/28 × 2 = 40/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
42/8 = 42 × 7/8 × 7 = 294/56 - Subtract the two like fractions:
40/56 - 294/56 = 40 - 294/56 = -254/56 - After reducing the fraction, the answer is -127/28
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