Answers

Add 70/49 and 45/80

1^st number: 1 21/49, 2^nd number: 45/80

70/49 + 45/80 is 223/112.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 49 and 80 is 3920
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3920
2. For the 1st fraction, since 49 × 80 = 3920,
   70/49 = 70 × 80/49 × 80 = 5600/3920
3. Likewise, for the 2nd fraction, since 80 × 49 = 3920,
   45/80 = 45 × 49/80 × 49 = 2205/3920
4. Add the two like fractions:
   5600/3920 + 2205/3920 = 5600 + 2205/3920 = 7805/3920
5. 7805/3920 simplified gives 223/112
6. So, 70/49 + 45/80 = 223/112
   In mixed form: 1111/112

MathStep (Works offline)

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

Related: ⁷⁰/₄₉+⁹⁰/₈₀ ⁷⁰/₉₈+⁴⁵/₈₀

Add Fractions Calculator