Answers

Add 20/75 and 75/70

1^st number: 20/75, 2^nd number: 1 5/70

20/75 + 75/70 is 281/210.

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,
   20/75 = 20 × 14/75 × 14 = 280/1050
3. Likewise, for the 2nd fraction, since 70 × 15 = 1050,
   75/70 = 75 × 15/70 × 15 = 1125/1050
4. Add the two like fractions:
   280/1050 + 1125/1050 = 280 + 1125/1050 = 1405/1050
5. 1405/1050 simplified gives 281/210
6. So, 20/75 + 75/70 = 281/210
   In mixed form: 171/210

MathStep (Works offline)

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

Related: ⁴⁰/₇₅+⁷⁵/₇₀ ⁶⁰/₇₅+⁷⁵/₇₀

Add Fractions Calculator