Subtract 90/54 from 21/75
1st number: 21/75, 2nd number: 1 36/54
21/75 - 90/54 is -104/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 54 is 1350
Next, find the equivalent fraction of both fractional numbers with denominator 1350 - For the 1st fraction, since 75 × 18 = 1350,
21/75 = 21 × 18/75 × 18 = 378/1350 - Likewise, for the 2nd fraction, since 54 × 25 = 1350,
90/54 = 90 × 25/54 × 25 = 2250/1350 - Subtract the two like fractions:
378/1350 - 2250/1350 = 378 - 2250/1350 = -1872/1350 - After reducing the fraction, the answer is -104/75
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