Answers

Add 75/21 and 54/70

1^st number: 3 12/21, 2^nd number: 54/70

75/21 + 54/70 is 152/35.

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,
   75/21 = 75 × 10/21 × 10 = 750/210
3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
   54/70 = 54 × 3/70 × 3 = 162/210
4. Add the two like fractions:
   750/210 + 162/210 = 750 + 162/210 = 912/210
5. 912/210 simplified gives 152/35
6. So, 75/21 + 54/70 = 152/35
   In mixed form: 412/35

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