Subtract 98/80 from 18/20
1st number: 18/20, 2nd number: 1 18/80
18/20 - 98/80 is -13/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
18/20 = 18 × 4/20 × 4 = 72/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
98/80 = 98 × 1/80 × 1 = 98/80 - Subtract the two like fractions:
72/80 - 98/80 = 72 - 98/80 = -26/80 - After reducing the fraction, the answer is -13/40
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