Answers

Add 20/70 and 90/30

1^st number: 20/70, 2^nd number: 3 0/30

20/70 + 90/30 is 23/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 30 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 70 × 3 = 210,
   20/70 = 20 × 3/70 × 3 = 60/210
3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
   90/30 = 90 × 7/30 × 7 = 630/210
4. Add the two like fractions:
   60/210 + 630/210 = 60 + 630/210 = 690/210
5. 690/210 simplified gives 23/7
6. So, 20/70 + 90/30 = 23/7
   In mixed form: 32/7

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