Subtract 84/20 from 72/98
1st number: 72/98, 2nd number: 4 4/20
72/98 - 84/20 is -849/245.
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,
72/98 = 72 × 10/98 × 10 = 720/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
84/20 = 84 × 49/20 × 49 = 4116/980 - Subtract the two like fractions:
720/980 - 4116/980 = 720 - 4116/980 = -3396/980 - After reducing the fraction, the answer is -849/245
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/98-84/40 72/98-84/60