Subtract 12/20 from 30/75
30/75 - 12/20 is -1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 20 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 75 × 4 = 300,
30/75 = 30 × 4/75 × 4 = 120/300 - Likewise, for the 2nd fraction, since 20 × 15 = 300,
12/20 = 12 × 15/20 × 15 = 180/300 - Subtract the two like fractions:
120/300 - 180/300 = 120 - 180/300 = -60/300 - After reducing the fraction, the answer is -1/5
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