Answers

Add 75/21 and 42/27

1^st number: 3 12/21, 2^nd number: 1 15/27

75/21 + 42/27 is 323/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 27 is 189
   
   Next, find the equivalent fraction of both fractional numbers with denominator 189
2. For the 1st fraction, since 21 × 9 = 189,
   75/21 = 75 × 9/21 × 9 = 675/189
3. Likewise, for the 2nd fraction, since 27 × 7 = 189,
   42/27 = 42 × 7/27 × 7 = 294/189
4. Add the two like fractions:
   675/189 + 294/189 = 675 + 294/189 = 969/189
5. 969/189 simplified gives 323/63
6. So, 75/21 + 42/27 = 323/63
   In mixed form: 58/63

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