Subtract 70/35 from 81/4
1st number: 20 1/4, 2nd number: 2 0/35
81/4 - 70/35 is 73/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 35 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 35 × 4 = 140,
70/35 = 70 × 4/35 × 4 = 280/140 - Subtract the two like fractions:
2835/140 - 280/140 = 2835 - 280/140 = 2555/140 - After reducing the fraction, the answer is 73/4
- In mixed form: 181/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/8-70/35 81/12-70/35 81/20-70/35 81/28-70/35