Answers

Add 70/20 and 15/90

1^st number: 3 10/20, 2^nd number: 15/90

70/20 + 15/90 is 11/3.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 90 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 20 × 9 = 180,
   70/20 = 70 × 9/20 × 9 = 630/180
3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
   15/90 = 15 × 2/90 × 2 = 30/180
4. Add the two like fractions:
   630/180 + 30/180 = 630 + 30/180 = 660/180
5. 660/180 simplified gives 11/3
6. So, 70/20 + 15/90 = 11/3
   In mixed form: 32/3

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