Subtract 72/42 from 2/18
1st number: 2/18, 2nd number: 1 30/42
2/18 - 72/42 is -101/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
2/18 = 2 × 7/18 × 7 = 14/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
72/42 = 72 × 3/42 × 3 = 216/126 - Subtract the two like fractions:
14/126 - 216/126 = 14 - 216/126 = -202/126 - After reducing the fraction, the answer is -101/63
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