Subtract 21/4 from 4/70
1st number: 4/70, 2nd number: 5 1/4
4/70 - 21/4 is -727/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 4 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
4/70 = 4 × 2/70 × 2 = 8/140 - Likewise, for the 2nd fraction, since 4 × 35 = 140,
21/4 = 21 × 35/4 × 35 = 735/140 - Subtract the two like fractions:
8/140 - 735/140 = 8 - 735/140 = -727/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/70-21/4 4/70-42/4 4/70-21/8 12/70-21/4 4/70-63/4 4/70-21/12 20/70-21/4 4/70-21/20 28/70-21/4 4/70-21/28