Answers

Add 96/21 and 42/80

1^st number: 4 12/21, 2^nd number: 42/80

96/21 + 42/80 is 1427/280.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 80 is 1680
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1680
2. For the 1st fraction, since 21 × 80 = 1680,
   96/21 = 96 × 80/21 × 80 = 7680/1680
3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
   42/80 = 42 × 21/80 × 21 = 882/1680
4. Add the two like fractions:
   7680/1680 + 882/1680 = 7680 + 882/1680 = 8562/1680
5. 8562/1680 simplified gives 1427/280
6. So, 96/21 + 42/80 = 1427/280
   In mixed form: 527/280

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