Add 70/63 and 56/21
1st number: 1 7/63, 2nd number: 2 14/21
70/63 + 56/21 is 34/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
70/63 = 70 × 1/63 × 1 = 70/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
56/21 = 56 × 3/21 × 3 = 168/63 - Add the two like fractions:
70/63 + 168/63 = 70 + 168/63 = 238/63 - 238/63 simplified gives 34/9
- So, 70/63 + 56/21 = 34/9
In mixed form: 37/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/63+56/42 70/63+56/63