Answers

Add 20/35 and 75/72

1^st number: 20/35, 2^nd number: 1 3/72

20/35 + 75/72 is 271/168.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 72 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 35 × 72 = 2520,
   20/35 = 20 × 72/35 × 72 = 1440/2520
3. Likewise, for the 2nd fraction, since 72 × 35 = 2520,
   75/72 = 75 × 35/72 × 35 = 2625/2520
4. Add the two like fractions:
   1440/2520 + 2625/2520 = 1440 + 2625/2520 = 4065/2520
5. 4065/2520 simplified gives 271/168
6. So, 20/35 + 75/72 = 271/168
   In mixed form: 1103/168

MathStep (Works offline)

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

Related: ⁴⁰/₃₅+⁷⁵/₇₂ ²⁰/₇₀+⁷⁵/₇₂ ⁶⁰/₃₅+⁷⁵/₇₂

Add Fractions Calculator