Subtract 21/50 from 36/90
36/90 - 21/50 is -1/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 50 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 90 × 5 = 450,
36/90 = 36 × 5/90 × 5 = 180/450 - Likewise, for the 2nd fraction, since 50 × 9 = 450,
21/50 = 21 × 9/50 × 9 = 189/450 - Subtract the two like fractions:
180/450 - 189/450 = 180 - 189/450 = -9/450 - After reducing the fraction, the answer is -1/50
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