Subtract 42/20 from 12/98
1st number: 12/98, 2nd number: 2 2/20
12/98 - 42/20 is -969/490.
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,
42/20 = 42 × 49/20 × 49 = 2058/980 - Subtract the two like fractions:
120/980 - 2058/980 = 120 - 2058/980 = -1938/980 - After reducing the fraction, the answer is -969/490
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/98-42/20 12/98-84/20 12/98-42/40 36/98-42/20 12/98-42/60 60/98-42/20 84/98-42/20