Answers

Add 70/30 and 28/63

1^st number: 2 10/30, 2^nd number: 28/63

70/30 + 28/63 is 25/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 63 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 30 × 21 = 630,
   70/30 = 70 × 21/30 × 21 = 1470/630
3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
   28/63 = 28 × 10/63 × 10 = 280/630
4. Add the two like fractions:
   1470/630 + 280/630 = 1470 + 280/630 = 1750/630
5. 1750/630 simplified gives 25/9
6. So, 70/30 + 28/63 = 25/9
   In mixed form: 27/9

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ⁷⁰/₃₀+⁵⁶/₆₃ ⁷⁰/₆₀+²⁸/₆₃ ⁷⁰/₃₀+⁸⁴/₆₃ ⁷⁰/₉₀+²⁸/₆₃

Add Fractions Calculator