Subtract 21/45 from 9/50
9/50 - 21/45 is -43/150.
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,
9/50 = 9 × 9/50 × 9 = 81/450 - Likewise, for the 2nd fraction, since 45 × 10 = 450,
21/45 = 21 × 10/45 × 10 = 210/450 - Subtract the two like fractions:
81/450 - 210/450 = 81 - 210/450 = -129/450 - After reducing the fraction, the answer is -43/150
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