Answers

Add 90/35 and 60/20

1^st number: 2 20/35, 2^nd number: 3 0/20

90/35 + 60/20 is 39/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 20 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 35 × 4 = 140,
   90/35 = 90 × 4/35 × 4 = 360/140
3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
   60/20 = 60 × 7/20 × 7 = 420/140
4. Add the two like fractions:
   360/140 + 420/140 = 360 + 420/140 = 780/140
5. 780/140 simplified gives 39/7
6. So, 90/35 + 60/20 = 39/7
   In mixed form: 54/7

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