Answers

Add 7/27 and 8/21

7/27 + 8/21 is 121/189.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 21 is 189
   
   Next, find the equivalent fraction of both fractional numbers with denominator 189
2. For the 1st fraction, since 27 × 7 = 189,
   7/27 = 7 × 7/27 × 7 = 49/189
3. Likewise, for the 2nd fraction, since 21 × 9 = 189,
   8/21 = 8 × 9/21 × 9 = 72/189
4. Add the two like fractions:
   49/189 + 72/189 = 49 + 72/189 = 121/189
5. So, 7/27 + 8/21 = 121/189

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