Answers

Add 21/84 and 56/45

1^st number: 21/84, 2^nd number: 1 11/45

21/84 + 56/45 is 269/180.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 45 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 84 × 15 = 1260,
   21/84 = 21 × 15/84 × 15 = 315/1260
3. Likewise, for the 2nd fraction, since 45 × 28 = 1260,
   56/45 = 56 × 28/45 × 28 = 1568/1260
4. Add the two like fractions:
   315/1260 + 1568/1260 = 315 + 1568/1260 = 1883/1260
5. 1883/1260 simplified gives 269/180
6. So, 21/84 + 56/45 = 269/180
   In mixed form: 189/180

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