Answers

Add 80/63 and 21/27

1^st number: 1 17/63, 2^nd number: 21/27

80/63 + 21/27 is 43/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 27 is 189
   
   Next, find the equivalent fraction of both fractional numbers with denominator 189
2. For the 1st fraction, since 63 × 3 = 189,
   80/63 = 80 × 3/63 × 3 = 240/189
3. Likewise, for the 2nd fraction, since 27 × 7 = 189,
   21/27 = 21 × 7/27 × 7 = 147/189
4. Add the two like fractions:
   240/189 + 147/189 = 240 + 147/189 = 387/189
5. 387/189 simplified gives 43/21
6. So, 80/63 + 21/27 = 43/21
   In mixed form: 21/21

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