Answers

Add 45/15 and 40/72

1^st number: 3 0/15, 2^nd number: 40/72

45/15 + 40/72 is 32/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 15 × 24 = 360,
   45/15 = 45 × 24/15 × 24 = 1080/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   40/72 = 40 × 5/72 × 5 = 200/360
4. Add the two like fractions:
   1080/360 + 200/360 = 1080 + 200/360 = 1280/360
5. 1280/360 simplified gives 32/9
6. So, 45/15 + 40/72 = 32/9
   In mixed form: 35/9

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