Subtract 28/9 from 20/75
1st number: 20/75, 2nd number: 3 1/9
20/75 - 28/9 is -128/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 9 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 75 × 3 = 225,
20/75 = 20 × 3/75 × 3 = 60/225 - Likewise, for the 2nd fraction, since 9 × 25 = 225,
28/9 = 28 × 25/9 × 25 = 700/225 - Subtract the two like fractions:
60/225 - 700/225 = 60 - 700/225 = -640/225 - After reducing the fraction, the answer is -128/45
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