Subtract 80/42 from 18/9
1st number: 2 0/9, 2nd number: 1 38/42
18/9 - 80/42 is 2/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 9 × 14 = 126,
18/9 = 18 × 14/9 × 14 = 252/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
80/42 = 80 × 3/42 × 3 = 240/126 - Subtract the two like fractions:
252/126 - 240/126 = 252 - 240/126 = 12/126 - After reducing the fraction, the answer is 2/21
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