Answers

Add 84/21 and 42/70

1^st number: 4 0/21, 2^nd number: 42/70

84/21 + 42/70 is 23/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 70 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 21 × 10 = 210,
   84/21 = 84 × 10/21 × 10 = 840/210
3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
   42/70 = 42 × 3/70 × 3 = 126/210
4. Add the two like fractions:
   840/210 + 126/210 = 840 + 126/210 = 966/210
5. 966/210 simplified gives 23/5
6. So, 84/21 + 42/70 = 23/5
   In mixed form: 43/5

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