Subtract 15/20 from 12/98
12/98 - 15/20 is -123/196.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 20 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 98 × 10 = 980,
12/98 = 12 × 10/98 × 10 = 120/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
15/20 = 15 × 49/20 × 49 = 735/980 - Subtract the two like fractions:
120/980 - 735/980 = 120 - 735/980 = -615/980 - After reducing the fraction, the answer is -123/196
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/98-15/20 12/98-30/20 12/98-15/40 36/98-15/20 12/98-45/20 12/98-15/60 60/98-15/20 12/98-75/20 84/98-15/20