Subtract 20/28 from 2/42
2/42 - 20/28 is -2/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
2/42 = 2 × 2/42 × 2 = 4/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
20/28 = 20 × 3/28 × 3 = 60/84 - Subtract the two like fractions:
4/84 - 60/84 = 4 - 60/84 = -56/84 - After reducing the fraction, the answer is -2/3
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