Answers

Add 42/24 and 72/20

1^st number: 1 18/24, 2^nd number: 3 12/20

42/24 + 72/20 is 107/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 24 and 20 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 24 × 5 = 120,
   42/24 = 42 × 5/24 × 5 = 210/120
3. Likewise, for the 2nd fraction, since 20 × 6 = 120,
   72/20 = 72 × 6/20 × 6 = 432/120
4. Add the two like fractions:
   210/120 + 432/120 = 210 + 432/120 = 642/120
5. 642/120 simplified gives 107/20
6. So, 42/24 + 72/20 = 107/20
   In mixed form: 57/20

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