Subtract 27/20 from 42/98
1st number: 42/98, 2nd number: 1 7/20
42/98 - 27/20 is -129/140.
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,
42/98 = 42 × 10/98 × 10 = 420/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
27/20 = 27 × 49/20 × 49 = 1323/980 - Subtract the two like fractions:
420/980 - 1323/980 = 420 - 1323/980 = -903/980 - After reducing the fraction, the answer is -129/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/98-27/20 42/98-54/20 42/98-27/40 42/98-81/20 42/98-27/60