Subtract 98/6 from 21/70
1st number: 21/70, 2nd number: 16 2/6
21/70 - 98/6 is -481/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 6 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
21/70 = 21 × 3/70 × 3 = 63/210 - Likewise, for the 2nd fraction, since 6 × 35 = 210,
98/6 = 98 × 35/6 × 35 = 3430/210 - Subtract the two like fractions:
63/210 - 3430/210 = 63 - 3430/210 = -3367/210 - After reducing the fraction, the answer is -481/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/70-98/6 21/70-98/12 63/70-98/6 21/70-98/18 21/70-98/30 21/70-98/42