Answers

Add 4/35 and 81/80

1^st number: 4/35, 2^nd number: 1 1/80

4/35 + 81/80 is 631/560.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 35 × 16 = 560,
   4/35 = 4 × 16/35 × 16 = 64/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   81/80 = 81 × 7/80 × 7 = 567/560
4. Add the two like fractions:
   64/560 + 567/560 = 64 + 567/560 = 631/560
5. So, 4/35 + 81/80 = 631/560
   In mixed form: 171/560

MathStep (Works offline)

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

Related: ⁸/₃₅+⁸¹/₈₀ ⁴/₇₀+⁸¹/₈₀ ¹²/₃₅+⁸¹/₈₀ ²⁰/₃₅+⁸¹/₈₀ ²⁸/₃₅+⁸¹/₈₀

Add Fractions Calculator