Answers

Add 70/90 and 72/28

1^st number: 70/90, 2^nd number: 2 16/28

70/90 + 72/28 is 211/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 28 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 90 × 14 = 1260,
   70/90 = 70 × 14/90 × 14 = 980/1260
3. Likewise, for the 2nd fraction, since 28 × 45 = 1260,
   72/28 = 72 × 45/28 × 45 = 3240/1260
4. Add the two like fractions:
   980/1260 + 3240/1260 = 980 + 3240/1260 = 4220/1260
5. 4220/1260 simplified gives 211/63
6. So, 70/90 + 72/28 = 211/63
   In mixed form: 322/63

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