Subtract 8/5 from 90/80
1st number: 1 10/80, 2nd number: 1 3/5
90/80 - 8/5 is -19/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 5 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
90/80 = 90 × 1/80 × 1 = 90/80 - Likewise, for the 2nd fraction, since 5 × 16 = 80,
8/5 = 8 × 16/5 × 16 = 128/80 - Subtract the two like fractions:
90/80 - 128/80 = 90 - 128/80 = -38/80 - After reducing the fraction, the answer is -19/40
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