Subtract 30/28 from 20/60
1st number: 20/60, 2nd number: 1 2/28
20/60 - 30/28 is -31/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
20/60 = 20 × 7/60 × 7 = 140/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
30/28 = 30 × 15/28 × 15 = 450/420 - Subtract the two like fractions:
140/420 - 450/420 = 140 - 450/420 = -310/420 - After reducing the fraction, the answer is -31/42
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