Answers

Add 42/28 and 75/20

1^st number: 1 14/28, 2^nd number: 3 15/20

42/28 + 75/20 is 21/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 20 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 28 × 5 = 140,
   42/28 = 42 × 5/28 × 5 = 210/140
3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
   75/20 = 75 × 7/20 × 7 = 525/140
4. Add the two like fractions:
   210/140 + 525/140 = 210 + 525/140 = 735/140
5. 735/140 simplified gives 21/4
6. So, 42/28 + 75/20 = 21/4
   In mixed form: 51/4

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