Subtract 4/20 from 25/40
25/40 - 4/20 is 17/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
25/40 = 25 × 1/40 × 1 = 25/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
4/20 = 4 × 2/20 × 2 = 8/40 - Subtract the two like fractions:
25/40 - 8/40 = 25 - 8/40 = 17/40
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