Subtract 20/18 from 21/50
1st number: 21/50, 2nd number: 1 2/18
21/50 - 20/18 is -311/450.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 18 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 18 × 25 = 450,
20/18 = 20 × 25/18 × 25 = 500/450 - Subtract the two like fractions:
189/450 - 500/450 = 189 - 500/450 = -311/450
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