Subtract 90/75 from 12/20
1st number: 12/20, 2nd number: 1 15/75
12/20 - 90/75 is -3/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 75 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 20 × 15 = 300,
12/20 = 12 × 15/20 × 15 = 180/300 - Likewise, for the 2nd fraction, since 75 × 4 = 300,
90/75 = 90 × 4/75 × 4 = 360/300 - Subtract the two like fractions:
180/300 - 360/300 = 180 - 360/300 = -180/300 - After reducing the fraction, the answer is -3/5
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