Add 35/21 and 30/63
1st number: 1 14/21, 2nd number: 30/63
35/21 + 30/63 is 15/7.
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,
35/21 = 35 × 3/21 × 3 = 105/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
30/63 = 30 × 1/63 × 1 = 30/63 - Add the two like fractions:
105/63 + 30/63 = 105 + 30/63 = 135/63 - 135/63 simplified gives 15/7
- So, 35/21 + 30/63 = 15/7
In mixed form: 21/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21+30/63 35/21+60/63 35/42+30/63 35/21+90/63 35/63+30/63