Answers

Add 42/70 and 90/75

1^st number: 42/70, 2^nd number: 1 15/75

42/70 + 90/75 is 9/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 75 is 1050
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1050
2. For the 1st fraction, since 70 × 15 = 1050,
   42/70 = 42 × 15/70 × 15 = 630/1050
3. Likewise, for the 2nd fraction, since 75 × 14 = 1050,
   90/75 = 90 × 14/75 × 14 = 1260/1050
4. Add the two like fractions:
   630/1050 + 1260/1050 = 630 + 1260/1050 = 1890/1050
5. 1890/1050 simplified gives 9/5
6. So, 42/70 + 90/75 = 9/5
   In mixed form: 14/5

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