Answers

Add 21/63 and 1/27

21/63 + 1/27 is 10/27.

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,
   21/63 = 21 × 3/63 × 3 = 63/189
3. Likewise, for the 2nd fraction, since 27 × 7 = 189,
   1/27 = 1 × 7/27 × 7 = 7/189
4. Add the two like fractions:
   63/189 + 7/189 = 63 + 7/189 = 70/189
5. 70/189 simplified gives 10/27
6. So, 21/63 + 1/27 = 10/27

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