Answers

Add 60/45 and 21/80

1^st number: 1 15/45, 2^nd number: 21/80

60/45 + 21/80 is 383/240.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 45 × 16 = 720,
   60/45 = 60 × 16/45 × 16 = 960/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   21/80 = 21 × 9/80 × 9 = 189/720
4. Add the two like fractions:
   960/720 + 189/720 = 960 + 189/720 = 1149/720
5. 1149/720 simplified gives 383/240
6. So, 60/45 + 21/80 = 383/240
   In mixed form: 1143/240

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