Answers

Add 75/72 and 21/45

1^st number: 1 3/72, 2^nd number: 21/45

75/72 + 21/45 is 181/120.

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,
   75/72 = 75 × 5/72 × 5 = 375/360
3. Likewise, for the 2nd fraction, since 45 × 8 = 360,
   21/45 = 21 × 8/45 × 8 = 168/360
4. Add the two like fractions:
   375/360 + 168/360 = 375 + 168/360 = 543/360
5. 543/360 simplified gives 181/120
6. So, 75/72 + 21/45 = 181/120
   In mixed form: 161/120

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