Answers

Add 64/45 and 20/72

1^st number: 1 19/45, 2^nd number: 20/72

64/45 + 20/72 is 17/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 45 × 8 = 360,
   64/45 = 64 × 8/45 × 8 = 512/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   20/72 = 20 × 5/72 × 5 = 100/360
4. Add the two like fractions:
   512/360 + 100/360 = 512 + 100/360 = 612/360
5. 612/360 simplified gives 17/10
6. So, 64/45 + 20/72 = 17/10
   In mixed form: 17/10

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