Answers

Add 81/21 and 70/32

1^st number: 3 18/21, 2^nd number: 2 6/32

81/21 + 70/32 is 677/112.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 32 is 672
   
   Next, find the equivalent fraction of both fractional numbers with denominator 672
2. For the 1st fraction, since 21 × 32 = 672,
   81/21 = 81 × 32/21 × 32 = 2592/672
3. Likewise, for the 2nd fraction, since 32 × 21 = 672,
   70/32 = 70 × 21/32 × 21 = 1470/672
4. Add the two like fractions:
   2592/672 + 1470/672 = 2592 + 1470/672 = 4062/672
5. 4062/672 simplified gives 677/112
6. So, 81/21 + 70/32 = 677/112
   In mixed form: 65/112

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