Answers

Add 30/70 and 90/28

1^st number: 30/70, 2^nd number: 3 6/28

30/70 + 90/28 is 51/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 28 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 70 × 2 = 140,
   30/70 = 30 × 2/70 × 2 = 60/140
3. Likewise, for the 2nd fraction, since 28 × 5 = 140,
   90/28 = 90 × 5/28 × 5 = 450/140
4. Add the two like fractions:
   60/140 + 450/140 = 60 + 450/140 = 510/140
5. 510/140 simplified gives 51/14
6. So, 30/70 + 90/28 = 51/14
   In mixed form: 39/14

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