Answers

Add 21/56 and 75/30

1^st number: 21/56, 2^nd number: 2 15/30

21/56 + 75/30 is 23/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 30 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 56 × 15 = 840,
   21/56 = 21 × 15/56 × 15 = 315/840
3. Likewise, for the 2nd fraction, since 30 × 28 = 840,
   75/30 = 75 × 28/30 × 28 = 2100/840
4. Add the two like fractions:
   315/840 + 2100/840 = 315 + 2100/840 = 2415/840
5. 2415/840 simplified gives 23/8
6. So, 21/56 + 75/30 = 23/8
   In mixed form: 27/8

MathStep (Works offline)

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

Related: ⁴²/₅₆+⁷⁵/₃₀ ²¹/₅₆+⁷⁵/₆₀ ⁶³/₅₆+⁷⁵/₃₀ ²¹/₅₆+⁷⁵/₉₀

Add Fractions Calculator