Subtract 18/42 from 1/63
1/63 - 18/42 is -26/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
1/63 = 1 × 2/63 × 2 = 2/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
18/42 = 18 × 3/42 × 3 = 54/126 - Subtract the two like fractions:
2/126 - 54/126 = 2 - 54/126 = -52/126 - After reducing the fraction, the answer is -26/63
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