Subtract 35/20 from 75/45
1st number: 1 30/45, 2nd number: 1 15/20
75/45 - 35/20 is -1/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
75/45 = 75 × 4/45 × 4 = 300/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
35/20 = 35 × 9/20 × 9 = 315/180 - Subtract the two like fractions:
300/180 - 315/180 = 300 - 315/180 = -15/180 - After reducing the fraction, the answer is -1/12
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