Subtract 63/27 from 6/42
1st number: 6/42, 2nd number: 2 9/27
6/42 - 63/27 is -46/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 27 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
6/42 = 6 × 9/42 × 9 = 54/378 - Likewise, for the 2nd fraction, since 27 × 14 = 378,
63/27 = 63 × 14/27 × 14 = 882/378 - Subtract the two like fractions:
54/378 - 882/378 = 54 - 882/378 = -828/378 - After reducing the fraction, the answer is -46/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/42-63/27 6/84-63/27 6/42-63/54 18/42-63/27 6/42-63/81 30/42-63/27