Subtract 28/20 from 18/16
1st number: 1 2/16, 2nd number: 1 8/20
18/16 - 28/20 is -11/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
18/16 = 18 × 5/16 × 5 = 90/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
28/20 = 28 × 4/20 × 4 = 112/80 - Subtract the two like fractions:
90/80 - 112/80 = 90 - 112/80 = -22/80 - After reducing the fraction, the answer is -11/40
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