Answers

Add 25/56 and 21/70

25/56 + 21/70 is 209/280.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 70 is 280
2. For the 1st fraction, since 56 × 5 = 280,
   25/56 = 25 × 5/56 × 5 = 125/280
3. Likewise, for the 2nd fraction, since 70 × 4 = 280,
   21/70 = 21 × 4/70 × 4 = 84/280
4. Add the two fractions:
   125/280 + 84/280 = 125 + 84/280 = 209/280
5. So, 25/56 + 21/70 = 209/280

MathStep (Works offline)

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

Related: ⁵⁰/₅₆+²¹/₇₀ ²⁵/₅₆+⁴²/₇₀ ⁷⁵/₅₆+²¹/₇₀ ²⁵/₅₆+⁶³/₇₀

Add Fractions Calculator