Subtract 8/70 from 15/4
1st number: 3 3/4, 2nd number: 8/70
15/4 - 8/70 is 509/140.
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,
15/4 = 15 × 35/4 × 35 = 525/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
8/70 = 8 × 2/70 × 2 = 16/140 - Subtract the two like fractions:
525/140 - 16/140 = 525 - 16/140 = 509/140 - In mixed form: 389/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/4-8/70 15/4-16/70 15/8-8/70 45/4-8/70 15/4-24/70 15/12-8/70 75/4-8/70 15/4-40/70 15/20-8/70 15/4-56/70 15/28-8/70