Subtract 90/20 from 90/80
1st number: 1 10/80, 2nd number: 4 10/20
90/80 - 90/20 is -27/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 20 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 20 × 4 = 80,
90/20 = 90 × 4/20 × 4 = 360/80 - Subtract the two like fractions:
90/80 - 360/80 = 90 - 360/80 = -270/80 - After reducing the fraction, the answer is -27/8
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