Answers

Add 90/50 and 21/28

1^st number: 1 40/50, 2^nd number: 21/28

90/50 + 21/28 is 51/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 50 and 28 is 700
   
   Next, find the equivalent fraction of both fractional numbers with denominator 700
2. For the 1st fraction, since 50 × 14 = 700,
   90/50 = 90 × 14/50 × 14 = 1260/700
3. Likewise, for the 2nd fraction, since 28 × 25 = 700,
   21/28 = 21 × 25/28 × 25 = 525/700
4. Add the two like fractions:
   1260/700 + 525/700 = 1260 + 525/700 = 1785/700
5. 1785/700 simplified gives 51/20
6. So, 90/50 + 21/28 = 51/20
   In mixed form: 211/20

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