Answers

Add 18/72 and 45/25

1^st number: 18/72, 2^nd number: 1 20/25

18/72 + 45/25 is 41/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 25 is 1800
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1800
2. For the 1st fraction, since 72 × 25 = 1800,
   18/72 = 18 × 25/72 × 25 = 450/1800
3. Likewise, for the 2nd fraction, since 25 × 72 = 1800,
   45/25 = 45 × 72/25 × 72 = 3240/1800
4. Add the two like fractions:
   450/1800 + 3240/1800 = 450 + 3240/1800 = 3690/1800
5. 3690/1800 simplified gives 41/20
6. So, 18/72 + 45/25 = 41/20
   In mixed form: 21/20

MathStep (Works offline)

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

Related: ³⁶/₇₂+⁴⁵/₂₅ ¹⁸/₇₂+⁹⁰/₂₅ ¹⁸/₇₂+⁴⁵/₅₀ ⁵⁴/₇₂+⁴⁵/₂₅ ¹⁸/₇₂+⁴⁵/₇₅ ⁹⁰/₇₂+⁴⁵/₂₅

Add Fractions Calculator