Subtract 63/27 from 3/42
1st number: 3/42, 2nd number: 2 9/27
3/42 - 63/27 is -95/42.
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,
3/42 = 3 × 9/42 × 9 = 27/378 - Likewise, for the 2nd fraction, since 27 × 14 = 378,
63/27 = 63 × 14/27 × 14 = 882/378 - Subtract the two like fractions:
27/378 - 882/378 = 27 - 882/378 = -855/378 - After reducing the fraction, the answer is -95/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/42-63/27 3/84-63/27 3/42-63/54 9/42-63/27 3/42-63/81 15/42-63/27 21/42-63/27