Answers

Add 81/35 and 30/90

1^st number: 2 11/35, 2^nd number: 30/90

81/35 + 30/90 is 278/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 35 × 18 = 630,
   81/35 = 81 × 18/35 × 18 = 1458/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   30/90 = 30 × 7/90 × 7 = 210/630
4. Add the two like fractions:
   1458/630 + 210/630 = 1458 + 210/630 = 1668/630
5. 1668/630 simplified gives 278/105
6. So, 81/35 + 30/90 = 278/105
   In mixed form: 268/105

MathStep (Works offline)

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

Related: ⁸¹/₃₅+⁶⁰/₉₀ ⁸¹/₇₀+³⁰/₉₀

Add Fractions Calculator