Subtract 20/5 from 28/45
1st number: 28/45, 2nd number: 4 0/5
28/45 - 20/5 is -152/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 5 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 45 × 1 = 45,
28/45 = 28 × 1/45 × 1 = 28/45 - Likewise, for the 2nd fraction, since 5 × 9 = 45,
20/5 = 20 × 9/5 × 9 = 180/45 - Subtract the two like fractions:
28/45 - 180/45 = 28 - 180/45 = -152/45
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