Subtract 21/8 from 90/25
1st number: 3 15/25, 2nd number: 2 5/8
90/25 - 21/8 is 39/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 8 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 25 × 8 = 200,
90/25 = 90 × 8/25 × 8 = 720/200 - Likewise, for the 2nd fraction, since 8 × 25 = 200,
21/8 = 21 × 25/8 × 25 = 525/200 - Subtract the two like fractions:
720/200 - 525/200 = 720 - 525/200 = 195/200 - After reducing the fraction, the answer is 39/40
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