Answers

Add 18/81 and 70/35

1^st number: 18/81, 2^nd number: 2 0/35

18/81 + 70/35 is 20/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 35 is 2835
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2835
2. For the 1st fraction, since 81 × 35 = 2835,
   18/81 = 18 × 35/81 × 35 = 630/2835
3. Likewise, for the 2nd fraction, since 35 × 81 = 2835,
   70/35 = 70 × 81/35 × 81 = 5670/2835
4. Add the two like fractions:
   630/2835 + 5670/2835 = 630 + 5670/2835 = 6300/2835
5. 6300/2835 simplified gives 20/9
6. So, 18/81 + 70/35 = 20/9
   In mixed form: 22/9

MathStep (Works offline)

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

Related: ³⁶/₈₁+⁷⁰/₃₅ ⁵⁴/₈₁+⁷⁰/₃₅ ⁹⁰/₈₁+⁷⁰/₃₅

Add Fractions Calculator