Subtract 9/27 from 42/49
42/49 - 9/27 is 11/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 27 is 1323
Next, find the equivalent fraction of both fractional numbers with denominator 1323 - For the 1st fraction, since 49 × 27 = 1323,
42/49 = 42 × 27/49 × 27 = 1134/1323 - Likewise, for the 2nd fraction, since 27 × 49 = 1323,
9/27 = 9 × 49/27 × 49 = 441/1323 - Subtract the two like fractions:
1134/1323 - 441/1323 = 1134 - 441/1323 = 693/1323 - After reducing the fraction, the answer is 11/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/49-9/27 42/49-18/27 42/98-9/27 42/49-9/54 42/49-9/81 42/49-45/27 42/49-63/27