Subtract 18/25 from 3/20
3/20 - 18/25 is -57/100.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 25 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 20 × 5 = 100,
3/20 = 3 × 5/20 × 5 = 15/100 - Likewise, for the 2nd fraction, since 25 × 4 = 100,
18/25 = 18 × 4/25 × 4 = 72/100 - Subtract the two like fractions:
15/100 - 72/100 = 15 - 72/100 = -57/100
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