Answers

Add 30/70 and 40/21

1^st number: 30/70, 2^nd number: 1 19/21

30/70 + 40/21 is 7/3.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 21 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 70 × 3 = 210,
   30/70 = 30 × 3/70 × 3 = 90/210
3. Likewise, for the 2nd fraction, since 21 × 10 = 210,
   40/21 = 40 × 10/21 × 10 = 400/210
4. Add the two like fractions:
   90/210 + 400/210 = 90 + 400/210 = 490/210
5. 490/210 simplified gives 7/3
6. So, 30/70 + 40/21 = 7/3
   In mixed form: 21/3

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