Answers

Add 70/63 and 28/80

1^st number: 1 7/63, 2^nd number: 28/80

70/63 + 28/80 is 263/180.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 80 is 5040
   
   Next, find the equivalent fraction of both fractional numbers with denominator 5040
2. For the 1st fraction, since 63 × 80 = 5040,
   70/63 = 70 × 80/63 × 80 = 5600/5040
3. Likewise, for the 2nd fraction, since 80 × 63 = 5040,
   28/80 = 28 × 63/80 × 63 = 1764/5040
4. Add the two like fractions:
   5600/5040 + 1764/5040 = 5600 + 1764/5040 = 7364/5040
5. 7364/5040 simplified gives 263/180
6. So, 70/63 + 28/80 = 263/180
   In mixed form: 183/180

MathStep (Works offline)

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

Related: ⁷⁰/₆₃+⁵⁶/₈₀ ⁷⁰/₆₃+⁸⁴/₈₀

Add Fractions Calculator