Answers

Add 21/90 and 84/56

1^st number: 21/90, 2^nd number: 1 28/56

21/90 + 84/56 is 26/15.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 56 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 90 × 28 = 2520,
   21/90 = 21 × 28/90 × 28 = 588/2520
3. Likewise, for the 2nd fraction, since 56 × 45 = 2520,
   84/56 = 84 × 45/56 × 45 = 3780/2520
4. Add the two like fractions:
   588/2520 + 3780/2520 = 588 + 3780/2520 = 4368/2520
5. 4368/2520 simplified gives 26/15
6. So, 21/90 + 84/56 = 26/15
   In mixed form: 111/15

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