Subtract 20/15 from 70/56
1st number: 1 14/56, 2nd number: 1 5/15
70/56 - 20/15 is -1/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 15 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
70/56 = 70 × 15/56 × 15 = 1050/840 - Likewise, for the 2nd fraction, since 15 × 56 = 840,
20/15 = 20 × 56/15 × 56 = 1120/840 - Subtract the two like fractions:
1050/840 - 1120/840 = 1050 - 1120/840 = -70/840 - After reducing the fraction, the answer is -1/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/56-40/15 70/56-20/30 70/56-60/15 70/56-20/45 70/56-20/75