Answers

Add 21/70 and 70/16

1^st number: 21/70, 2^nd number: 4 6/16

21/70 + 70/16 is 187/40.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 16 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 70 × 8 = 560,
   21/70 = 21 × 8/70 × 8 = 168/560
3. Likewise, for the 2nd fraction, since 16 × 35 = 560,
   70/16 = 70 × 35/16 × 35 = 2450/560
4. Add the two like fractions:
   168/560 + 2450/560 = 168 + 2450/560 = 2618/560
5. 2618/560 simplified gives 187/40
6. So, 21/70 + 70/16 = 187/40
   In mixed form: 427/40

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