Subtract 18/9 from 4/42
1st number: 4/42, 2nd number: 2 0/9
4/42 - 18/9 is -40/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 9 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
4/42 = 4 × 3/42 × 3 = 12/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
18/9 = 18 × 14/9 × 14 = 252/126 - Subtract the two like fractions:
12/126 - 252/126 = 12 - 252/126 = -240/126 - After reducing the fraction, the answer is -40/21
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