Answers

Add 45/30 and 63/56

1^st number: 1 15/30, 2^nd number: 1 7/56

45/30 + 63/56 is 21/8.

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,
   45/30 = 45 × 28/30 × 28 = 1260/840
3. Likewise, for the 2nd fraction, since 56 × 15 = 840,
   63/56 = 63 × 15/56 × 15 = 945/840
4. Add the two like fractions:
   1260/840 + 945/840 = 1260 + 945/840 = 2205/840
5. 2205/840 simplified gives 21/8
6. So, 45/30 + 63/56 = 21/8
   In mixed form: 25/8

MathStep (Works offline)

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

Related: ⁹⁰/₃₀+⁶³/₅₆ ⁴⁵/₆₀+⁶³/₅₆ ⁴⁵/₉₀+⁶³/₅₆

Add Fractions Calculator