Add 8/20 and 63/70
8/20 + 63/70 is 13/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
8/20 = 8 × 7/20 × 7 = 56/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
63/70 = 63 × 2/70 × 2 = 126/140 - Add the two like fractions:
56/140 + 126/140 = 56 + 126/140 = 182/140 - 182/140 simplified gives 13/10
- So, 8/20 + 63/70 = 13/10
In mixed form: 13/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/20+63/70 8/40+63/70 24/20+63/70 8/60+63/70 40/20+63/70 56/20+63/70