Subtract 4/63 from 12/42
12/42 - 4/63 is 2/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
12/42 = 12 × 3/42 × 3 = 36/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
4/63 = 4 × 2/63 × 2 = 8/126 - Subtract the two like fractions:
36/126 - 8/126 = 36 - 8/126 = 28/126 - After reducing the fraction, the answer is 2/9
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