Subtract 63/70 from 21/16
1st number: 1 5/16, 2nd number: 63/70
21/16 - 63/70 is 33/80.
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,
63/70 = 63 × 8/70 × 8 = 504/560 - Subtract the two like fractions:
735/560 - 504/560 = 735 - 504/560 = 231/560 - After reducing the fraction, the answer is 33/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/16-63/70 21/32-63/70 63/16-63/70 21/48-63/70 21/80-63/70