Add 28/70 and 63/8
1st number: 28/70, 2nd number: 7 7/8
28/70 + 63/8 is 331/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 8 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
28/70 = 28 × 4/70 × 4 = 112/280 - Likewise, for the 2nd fraction, since 8 × 35 = 280,
63/8 = 63 × 35/8 × 35 = 2205/280 - Add the two like fractions:
112/280 + 2205/280 = 112 + 2205/280 = 2317/280 - 2317/280 simplified gives 331/40
- So, 28/70 + 63/8 = 331/40
In mixed form: 811/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/70+63/8 28/70+63/16 84/70+63/8 28/70+63/24 28/70+63/40 28/70+63/56