Answers

Add 90/70 and 20/35

1^st number: 1 20/70, 2^nd number: 20/35

90/70 + 20/35 is 13/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 35 is 70
   
   Next, find the equivalent fraction of both fractional numbers with denominator 70
2. For the 1st fraction, since 70 × 1 = 70,
   90/70 = 90 × 1/70 × 1 = 90/70
3. Likewise, for the 2nd fraction, since 35 × 2 = 70,
   20/35 = 20 × 2/35 × 2 = 40/70
4. Add the two like fractions:
   90/70 + 40/70 = 90 + 40/70 = 130/70
5. 130/70 simplified gives 13/7
6. So, 90/70 + 20/35 = 13/7
   In mixed form: 16/7

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