Answers

Add 18/56 and 72/45

1^st number: 18/56, 2^nd number: 1 27/45

18/56 + 72/45 is 269/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 45 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 56 × 45 = 2520,
   18/56 = 18 × 45/56 × 45 = 810/2520
3. Likewise, for the 2nd fraction, since 45 × 56 = 2520,
   72/45 = 72 × 56/45 × 56 = 4032/2520
4. Add the two like fractions:
   810/2520 + 4032/2520 = 810 + 4032/2520 = 4842/2520
5. 4842/2520 simplified gives 269/140
6. So, 18/56 + 72/45 = 269/140
   In mixed form: 1129/140

MathStep (Works offline)

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

Related: ³⁶/₅₆+⁷²/₄₅ ¹⁸/₅₆+⁷²/₉₀ ⁵⁴/₅₆+⁷²/₄₅ ⁹⁰/₅₆+⁷²/₄₅

Add Fractions Calculator