Answers

Add 56/75 and 21/72

56/75 + 21/72 is 623/600.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 72 is 1800
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1800
2. For the 1st fraction, since 75 × 24 = 1800,
   56/75 = 56 × 24/75 × 24 = 1344/1800
3. Likewise, for the 2nd fraction, since 72 × 25 = 1800,
   21/72 = 21 × 25/72 × 25 = 525/1800
4. Add the two like fractions:
   1344/1800 + 525/1800 = 1344 + 525/1800 = 1869/1800
5. 1869/1800 simplified gives 623/600
6. So, 56/75 + 21/72 = 623/600
   In mixed form: 123/600

MathStep (Works offline)

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

Related: ⁵⁶/₇₅+⁴²/₇₂ ⁵⁶/₇₅+⁶³/₇₂

Add Fractions Calculator