Subtract 98/70 from 21/16
1st number: 1 5/16, 2nd number: 1 28/70
21/16 - 98/70 is -7/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 70 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 16 × 35 = 560,
21/16 = 21 × 35/16 × 35 = 735/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
98/70 = 98 × 8/70 × 8 = 784/560 - Subtract the two like fractions:
735/560 - 784/560 = 735 - 784/560 = -49/560 - After reducing the fraction, the answer is -7/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/16-98/70 21/32-98/70 63/16-98/70 21/48-98/70 21/80-98/70