Answers

Add 4/42 and 84/80

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

4/42 + 84/80 is 481/420.

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,
   4/42 = 4 × 40/42 × 40 = 160/1680
3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
   84/80 = 84 × 21/80 × 21 = 1764/1680
4. Add the two like fractions:
   160/1680 + 1764/1680 = 160 + 1764/1680 = 1924/1680
5. 1924/1680 simplified gives 481/420
6. So, 4/42 + 84/80 = 481/420
   In mixed form: 161/420

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