Subtract 21/45 from 25/50
25/50 - 21/45 is 1/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 45 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 50 × 9 = 450,
25/50 = 25 × 9/50 × 9 = 225/450 - Likewise, for the 2nd fraction, since 45 × 10 = 450,
21/45 = 21 × 10/45 × 10 = 210/450 - Subtract the two like fractions:
225/450 - 210/450 = 225 - 210/450 = 15/450 - After reducing the fraction, the answer is 1/30
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