Answers

Add 42/30 and 54/72

1^st number: 1 12/30, 2^nd number: 54/72

42/30 + 54/72 is 43/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 30 × 12 = 360,
   42/30 = 42 × 12/30 × 12 = 504/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   54/72 = 54 × 5/72 × 5 = 270/360
4. Add the two like fractions:
   504/360 + 270/360 = 504 + 270/360 = 774/360
5. 774/360 simplified gives 43/20
6. So, 42/30 + 54/72 = 43/20
   In mixed form: 23/20

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