Answers

Add 81/75 and 20/70

1^st number: 1 6/75, 2^nd number: 20/70

81/75 + 20/70 is 239/175.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 70 is 1050
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1050
2. For the 1st fraction, since 75 × 14 = 1050,
   81/75 = 81 × 14/75 × 14 = 1134/1050
3. Likewise, for the 2nd fraction, since 70 × 15 = 1050,
   20/70 = 20 × 15/70 × 15 = 300/1050
4. Add the two like fractions:
   1134/1050 + 300/1050 = 1134 + 300/1050 = 1434/1050
5. 1434/1050 simplified gives 239/175
6. So, 81/75 + 20/70 = 239/175
   In mixed form: 164/175

MathStep (Works offline)

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

Related: ⁸¹/₇₅+⁴⁰/₇₀ ⁸¹/₇₅+⁶⁰/₇₀

Add Fractions Calculator