Subtract 21/50 from 90/25
1st number: 3 15/25, 2nd number: 21/50
90/25 - 21/50 is 159/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 50 is 50
Next, find the equivalent fraction of both fractional numbers with denominator 50 - For the 1st fraction, since 25 × 2 = 50,
90/25 = 90 × 2/25 × 2 = 180/50 - Likewise, for the 2nd fraction, since 50 × 1 = 50,
21/50 = 21 × 1/50 × 1 = 21/50 - Subtract the two like fractions:
180/50 - 21/50 = 180 - 21/50 = 159/50 - In mixed form: 39/50
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