Subtract 90/81 from 45/50
1st number: 45/50, 2nd number: 1 9/81
45/50 - 90/81 is -19/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 81 is 4050
Next, find the equivalent fraction of both fractional numbers with denominator 4050 - For the 1st fraction, since 50 × 81 = 4050,
45/50 = 45 × 81/50 × 81 = 3645/4050 - Likewise, for the 2nd fraction, since 81 × 50 = 4050,
90/81 = 90 × 50/81 × 50 = 4500/4050 - Subtract the two like fractions:
3645/4050 - 4500/4050 = 3645 - 4500/4050 = -855/4050 - After reducing the fraction, the answer is -19/90
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Related: 90/50-90/81