Answers

Add 20/90 and 72/15

1^st number: 20/90, 2^nd number: 4 12/15

20/90 + 72/15 is 226/45.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 15 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 90 × 1 = 90,
   20/90 = 20 × 1/90 × 1 = 20/90
3. Likewise, for the 2nd fraction, since 15 × 6 = 90,
   72/15 = 72 × 6/15 × 6 = 432/90
4. Add the two like fractions:
   20/90 + 432/90 = 20 + 432/90 = 452/90
5. 452/90 simplified gives 226/45
6. So, 20/90 + 72/15 = 226/45
   In mixed form: 51/45

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