Subtract 15/45 from 21/50
21/50 - 15/45 is 13/150.
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,
21/50 = 21 × 9/50 × 9 = 189/450 - Likewise, for the 2nd fraction, since 45 × 10 = 450,
15/45 = 15 × 10/45 × 10 = 150/450 - Subtract the two like fractions:
189/450 - 150/450 = 189 - 150/450 = 39/450 - After reducing the fraction, the answer is 13/150
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