Subtract 75/20 from 90/25
1st number: 3 15/25, 2nd number: 3 15/20
90/25 - 75/20 is -3/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 20 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 25 × 4 = 100,
90/25 = 90 × 4/25 × 4 = 360/100 - Likewise, for the 2nd fraction, since 20 × 5 = 100,
75/20 = 75 × 5/20 × 5 = 375/100 - Subtract the two like fractions:
360/100 - 375/100 = 360 - 375/100 = -15/100 - After reducing the fraction, the answer is -3/20
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