Subtract 30/49 from 27/42
27/42 - 30/49 is 3/98.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 49 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 42 × 7 = 294,
27/42 = 27 × 7/42 × 7 = 189/294 - Likewise, for the 2nd fraction, since 49 × 6 = 294,
30/49 = 30 × 6/49 × 6 = 180/294 - Subtract the two like fractions:
189/294 - 180/294 = 189 - 180/294 = 9/294 - After reducing the fraction, the answer is 3/98
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42-30/49 27/42-60/49 27/84-30/49 27/42-30/98 81/42-30/49 27/42-90/49