Answers

Add 42/20 and 75/70

1^st number: 2 2/20, 2^nd number: 1 5/70

42/20 + 75/70 is 111/35.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 70 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 20 × 7 = 140,
   42/20 = 42 × 7/20 × 7 = 294/140
3. Likewise, for the 2nd fraction, since 70 × 2 = 140,
   75/70 = 75 × 2/70 × 2 = 150/140
4. Add the two like fractions:
   294/140 + 150/140 = 294 + 150/140 = 444/140
5. 444/140 simplified gives 111/35
6. So, 42/20 + 75/70 = 111/35
   In mixed form: 36/35

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