Answers

Add 20/15 and 70/90

1^st number: 1 5/15, 2^nd number: 70/90

20/15 + 70/90 is 19/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 90 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 15 × 6 = 90,
   20/15 = 20 × 6/15 × 6 = 120/90
3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
   70/90 = 70 × 1/90 × 1 = 70/90
4. Add the two like fractions:
   120/90 + 70/90 = 120 + 70/90 = 190/90
5. 190/90 simplified gives 19/9
6. So, 20/15 + 70/90 = 19/9
   In mixed form: 21/9

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