Subtract 3/70 from 15/56
15/56 - 3/70 is 9/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
15/56 = 15 × 5/56 × 5 = 75/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
3/70 = 3 × 4/70 × 4 = 12/280 - Subtract the two like fractions:
75/280 - 12/280 = 75 - 12/280 = 63/280 - After reducing the fraction, the answer is 9/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/56-3/70 15/56-6/70 45/56-3/70 15/56-9/70 75/56-3/70 15/56-15/70 15/56-21/70