Answers

Add 72/18 and 63/90

1^st number: 4 0/18, 2^nd number: 63/90

72/18 + 63/90 is 47/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 90 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 18 × 5 = 90,
   72/18 = 72 × 5/18 × 5 = 360/90
3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
   63/90 = 63 × 1/90 × 1 = 63/90
4. Add the two like fractions:
   360/90 + 63/90 = 360 + 63/90 = 423/90
5. 423/90 simplified gives 47/10
6. So, 72/18 + 63/90 = 47/10
   In mixed form: 47/10

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