Add 70/20 and 63/56
1st number: 3 10/20, 2nd number: 1 7/56
70/20 + 63/56 is 37/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 20 × 14 = 280,
70/20 = 70 × 14/20 × 14 = 980/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
63/56 = 63 × 5/56 × 5 = 315/280 - Add the two like fractions:
980/280 + 315/280 = 980 + 315/280 = 1295/280 - 1295/280 simplified gives 37/8
- So, 70/20 + 63/56 = 37/8
In mixed form: 45/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/40+63/56 70/60+63/56