Subtract 21/6 from 18/63
1st number: 18/63, 2nd number: 3 3/6
18/63 - 21/6 is -45/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 6 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
18/63 = 18 × 2/63 × 2 = 36/126 - Likewise, for the 2nd fraction, since 6 × 21 = 126,
21/6 = 21 × 21/6 × 21 = 441/126 - Subtract the two like fractions:
36/126 - 441/126 = 36 - 441/126 = -405/126 - After reducing the fraction, the answer is -45/14
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