Answers

Add 70/28 and 9/72

1^st number: 2 14/28, 2^nd number: 9/72

70/28 + 9/72 is 21/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 72 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 28 × 18 = 504,
   70/28 = 70 × 18/28 × 18 = 1260/504
3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
   9/72 = 9 × 7/72 × 7 = 63/504
4. Add the two like fractions:
   1260/504 + 63/504 = 1260 + 63/504 = 1323/504
5. 1323/504 simplified gives 21/8
6. So, 70/28 + 9/72 = 21/8
   In mixed form: 25/8

MathStep (Works offline)

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

Related: ⁷⁰/₂₈+¹⁸/₇₂ ⁷⁰/₅₆+⁹/₇₂ ⁷⁰/₂₈+²⁷/₇₂ ⁷⁰/₈₄+⁹/₇₂ ⁷⁰/₂₈+⁴⁵/₇₂ ⁷⁰/₂₈+⁶³/₇₂

Add Fractions Calculator