Answers

Add 42/24 and 70/80

1^st number: 1 18/24, 2^nd number: 70/80

42/24 + 70/80 is 21/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 24 and 80 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 24 × 10 = 240,
   42/24 = 42 × 10/24 × 10 = 420/240
3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
   70/80 = 70 × 3/80 × 3 = 210/240
4. Add the two like fractions:
   420/240 + 210/240 = 420 + 210/240 = 630/240
5. 630/240 simplified gives 21/8
6. So, 42/24 + 70/80 = 21/8
   In mixed form: 25/8

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