Subtract 90/60 from 20/28
1st number: 20/28, 2nd number: 1 30/60
20/28 - 90/60 is -11/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
20/28 = 20 × 15/28 × 15 = 300/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
90/60 = 90 × 7/60 × 7 = 630/420 - Subtract the two like fractions:
300/420 - 630/420 = 300 - 630/420 = -330/420 - After reducing the fraction, the answer is -11/14
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