Subtract 24/70 from 81/4
1st number: 20 1/4, 2nd number: 24/70
81/4 - 24/70 is 2787/140.
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,
81/4 = 81 × 35/4 × 35 = 2835/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
24/70 = 24 × 2/70 × 2 = 48/140 - Subtract the two like fractions:
2835/140 - 48/140 = 2835 - 48/140 = 2787/140 - In mixed form: 19127/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/4-48/70 81/8-24/70 81/4-72/70 81/12-24/70 81/20-24/70 81/28-24/70