Answers

Add 75/20 and 42/45

1^st number: 3 15/20, 2^nd number: 42/45

75/20 + 42/45 is 281/60.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 45 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 20 × 9 = 180,
   75/20 = 75 × 9/20 × 9 = 675/180
3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
   42/45 = 42 × 4/45 × 4 = 168/180
4. Add the two like fractions:
   675/180 + 168/180 = 675 + 168/180 = 843/180
5. 843/180 simplified gives 281/60
6. So, 75/20 + 42/45 = 281/60
   In mixed form: 441/60

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