Subtract 16/70 from 21/4
1st number: 5 1/4, 2nd number: 16/70
21/4 - 16/70 is 703/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 4 × 35 = 140,
21/4 = 21 × 35/4 × 35 = 735/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
16/70 = 16 × 2/70 × 2 = 32/140 - Subtract the two like fractions:
735/140 - 32/140 = 735 - 32/140 = 703/140 - In mixed form: 53/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/4-16/70 21/4-32/70 21/8-16/70 63/4-16/70 21/4-48/70 21/12-16/70 21/4-80/70 21/20-16/70 21/28-16/70