Answers

Add 21/16 and 56/70

1^st number: 1 5/16, 2^nd number: 56/70

21/16 + 56/70 is 169/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 16 and 70 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 16 × 35 = 560,
   21/16 = 21 × 35/16 × 35 = 735/560
3. Likewise, for the 2nd fraction, since 70 × 8 = 560,
   56/70 = 56 × 8/70 × 8 = 448/560
4. Add the two like fractions:
   735/560 + 448/560 = 735 + 448/560 = 1183/560
5. 1183/560 simplified gives 169/80
6. So, 21/16 + 56/70 = 169/80
   In mixed form: 29/80

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