Subtract 49/20 from 8/90
1st number: 8/90, 2nd number: 2 9/20
8/90 - 49/20 is -85/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
8/90 = 8 × 2/90 × 2 = 16/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
49/20 = 49 × 9/20 × 9 = 441/180 - Subtract the two like fractions:
16/180 - 441/180 = 16 - 441/180 = -425/180 - After reducing the fraction, the answer is -85/36
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