Subtract 84/35 from 21/98
1st number: 21/98, 2nd number: 2 14/35
21/98 - 84/35 is -153/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 35 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 98 × 5 = 490,
21/98 = 21 × 5/98 × 5 = 105/490 - Likewise, for the 2nd fraction, since 35 × 14 = 490,
84/35 = 84 × 14/35 × 14 = 1176/490 - Subtract the two like fractions:
105/490 - 1176/490 = 105 - 1176/490 = -1071/490 - After reducing the fraction, the answer is -153/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/98-84/35 21/98-84/70 63/98-84/35