Answers

Add 15/56 and 4/70

15/56 + 4/70 is 13/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 70 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 56 × 5 = 280,
   15/56 = 15 × 5/56 × 5 = 75/280
3. Likewise, for the 2nd fraction, since 70 × 4 = 280,
   4/70 = 4 × 4/70 × 4 = 16/280
4. Add the two like fractions:
   75/280 + 16/280 = 75 + 16/280 = 91/280
5. 91/280 simplified gives 13/40
6. So, 15/56 + 4/70 = 13/40

MathStep (Works offline)

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

Related: ³⁰/₅₆+⁴/₇₀ ¹⁵/₅₆+⁸/₇₀ ⁴⁵/₅₆+⁴/₇₀ ¹⁵/₅₆+¹²/₇₀ ⁷⁵/₅₆+⁴/₇₀ ¹⁵/₅₆+²⁰/₇₀ ¹⁵/₅₆+²⁸/₇₀

Add Fractions Calculator