Add 56/21 and 70/63
1st number: 2 14/21, 2nd number: 1 7/63
56/21 + 70/63 is 34/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
56/21 = 56 × 3/21 × 3 = 168/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
70/63 = 70 × 1/63 × 1 = 70/63 - Add the two like fractions:
168/63 + 70/63 = 168 + 70/63 = 238/63 - 238/63 simplified gives 34/9
- So, 56/21 + 70/63 = 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: 56/42+70/63 56/63+70/63