Answers

Add 54/21 and 70/32

1^st number: 2 12/21, 2^nd number: 2 6/32

54/21 + 70/32 is 533/112.

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,
   54/21 = 54 × 32/21 × 32 = 1728/672
3. Likewise, for the 2nd fraction, since 32 × 21 = 672,
   70/32 = 70 × 21/32 × 21 = 1470/672
4. Add the two like fractions:
   1728/672 + 1470/672 = 1728 + 1470/672 = 3198/672
5. 3198/672 simplified gives 533/112
6. So, 54/21 + 70/32 = 533/112
   In mixed form: 485/112

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