Subtract 4/80 from 90/25
1st number: 3 15/25, 2nd number: 4/80
90/25 - 4/80 is 71/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 80 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 25 × 16 = 400,
90/25 = 90 × 16/25 × 16 = 1440/400 - Likewise, for the 2nd fraction, since 80 × 5 = 400,
4/80 = 4 × 5/80 × 5 = 20/400 - Subtract the two like fractions:
1440/400 - 20/400 = 1440 - 20/400 = 1420/400 - After reducing the fraction, the answer is 71/20
- In mixed form: 311/20
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