Subtract 48/42 from 3/20
1st number: 3/20, 2nd number: 1 6/42
3/20 - 48/42 is -139/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
3/20 = 3 × 21/20 × 21 = 63/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
48/42 = 48 × 10/42 × 10 = 480/420 - Subtract the two like fractions:
63/420 - 480/420 = 63 - 480/420 = -417/420 - After reducing the fraction, the answer is -139/140
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