Answers

Add 20/42 and 98/80

1^st number: 20/42, 2^nd number: 1 18/80

20/42 + 98/80 is 1429/840.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 80 is 1680
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1680
2. For the 1st fraction, since 42 × 40 = 1680,
   20/42 = 20 × 40/42 × 40 = 800/1680
3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
   98/80 = 98 × 21/80 × 21 = 2058/1680
4. Add the two like fractions:
   800/1680 + 2058/1680 = 800 + 2058/1680 = 2858/1680
5. 2858/1680 simplified gives 1429/840
6. So, 20/42 + 98/80 = 1429/840
   In mixed form: 1589/840

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