Answers

Add 70/30 and 21/56

1^st number: 2 10/30, 2^nd number: 21/56

70/30 + 21/56 is 65/24.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 56 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 30 × 28 = 840,
   70/30 = 70 × 28/30 × 28 = 1960/840
3. Likewise, for the 2nd fraction, since 56 × 15 = 840,
   21/56 = 21 × 15/56 × 15 = 315/840
4. Add the two like fractions:
   1960/840 + 315/840 = 1960 + 315/840 = 2275/840
5. 2275/840 simplified gives 65/24
6. So, 70/30 + 21/56 = 65/24
   In mixed form: 217/24

MathStep (Works offline)

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

Related: ⁷⁰/₃₀+⁴²/₅₆ ⁷⁰/₆₀+²¹/₅₆ ⁷⁰/₃₀+⁶³/₅₆ ⁷⁰/₉₀+²¹/₅₆

Add Fractions Calculator