Subtract 54/10 from 21/98
1st number: 21/98, 2nd number: 5 4/10
21/98 - 54/10 is -363/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 10 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 10 × 49 = 490,
54/10 = 54 × 49/10 × 49 = 2646/490 - Subtract the two like fractions:
105/490 - 2646/490 = 105 - 2646/490 = -2541/490 - After reducing the fraction, the answer is -363/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/98-54/10 21/98-54/20 63/98-54/10 21/98-54/30 21/98-54/50 21/98-54/70