Answers

Add 84/45 and 12/60

1^st number: 1 39/45, 2^nd number: 12/60

84/45 + 12/60 is 31/15.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 60 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 45 × 4 = 180,
   84/45 = 84 × 4/45 × 4 = 336/180
3. Likewise, for the 2nd fraction, since 60 × 3 = 180,
   12/60 = 12 × 3/60 × 3 = 36/180
4. Add the two like fractions:
   336/180 + 36/180 = 336 + 36/180 = 372/180
5. 372/180 simplified gives 31/15
6. So, 84/45 + 12/60 = 31/15
   In mixed form: 21/15

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