Subtract 5/49 from 18/42
18/42 - 5/49 is 16/49.
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,
18/42 = 18 × 7/42 × 7 = 126/294 - Likewise, for the 2nd fraction, since 49 × 6 = 294,
5/49 = 5 × 6/49 × 6 = 30/294 - Subtract the two like fractions:
126/294 - 30/294 = 126 - 30/294 = 96/294 - After reducing the fraction, the answer is 16/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/42-5/49 18/42-10/49 18/84-5/49 18/42-5/98 54/42-5/49 18/42-15/49 90/42-5/49 18/42-25/49 18/42-35/49