Answers

Add 75/21 and 18/49

1^st number: 3 12/21, 2^nd number: 18/49

75/21 + 18/49 is 193/49.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 49 is 147
   
   Next, find the equivalent fraction of both fractional numbers with denominator 147
2. For the 1st fraction, since 21 × 7 = 147,
   75/21 = 75 × 7/21 × 7 = 525/147
3. Likewise, for the 2nd fraction, since 49 × 3 = 147,
   18/49 = 18 × 3/49 × 3 = 54/147
4. Add the two like fractions:
   525/147 + 54/147 = 525 + 54/147 = 579/147
5. 579/147 simplified gives 193/49
6. So, 75/21 + 18/49 = 193/49
   In mixed form: 346/49

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