Answers

Add 90/80 and 70/28

1^st number: 1 10/80, 2^nd number: 2 14/28

90/80 + 70/28 is 29/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 28 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 80 × 7 = 560,
   90/80 = 90 × 7/80 × 7 = 630/560
3. Likewise, for the 2nd fraction, since 28 × 20 = 560,
   70/28 = 70 × 20/28 × 20 = 1400/560
4. Add the two like fractions:
   630/560 + 1400/560 = 630 + 1400/560 = 2030/560
5. 2030/560 simplified gives 29/8
6. So, 90/80 + 70/28 = 29/8
   In mixed form: 35/8

MathStep (Works offline)

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

Related: ⁹⁰/₈₀+⁷⁰/₅₆ ⁹⁰/₈₀+⁷⁰/₈₄

Add Fractions Calculator