Answers

Add 28/72 and 54/45

1^st number: 28/72, 2^nd number: 1 9/45

28/72 + 54/45 is 143/90.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 45 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 72 × 5 = 360,
   28/72 = 28 × 5/72 × 5 = 140/360
3. Likewise, for the 2nd fraction, since 45 × 8 = 360,
   54/45 = 54 × 8/45 × 8 = 432/360
4. Add the two like fractions:
   140/360 + 432/360 = 140 + 432/360 = 572/360
5. 572/360 simplified gives 143/90
6. So, 28/72 + 54/45 = 143/90
   In mixed form: 153/90

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