Subtract 18/98 from 2/42
2/42 - 18/98 is -20/147.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 98 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 42 × 7 = 294,
2/42 = 2 × 7/42 × 7 = 14/294 - Likewise, for the 2nd fraction, since 98 × 3 = 294,
18/98 = 18 × 3/98 × 3 = 54/294 - Subtract the two like fractions:
14/294 - 54/294 = 14 - 54/294 = -40/294 - After reducing the fraction, the answer is -20/147
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/42-18/98 2/42-36/98 2/84-18/98 6/42-18/98 2/42-54/98 10/42-18/98 2/42-90/98 14/42-18/98