Subtract 64/90 from 81/50
1st number: 1 31/50, 2nd number: 64/90
81/50 - 64/90 is 409/450.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 50 × 9 = 450,
81/50 = 81 × 9/50 × 9 = 729/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
64/90 = 64 × 5/90 × 5 = 320/450 - Subtract the two like fractions:
729/450 - 320/450 = 729 - 320/450 = 409/450
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