Add 7/27 and 7/21
7/27 + 7/21 is 16/27.
Steps for adding fractions
- 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 - For the 1st fraction, since 27 × 7 = 189,
7/27 = 7 × 7/27 × 7 = 49/189 - Likewise, for the 2nd fraction, since 21 × 9 = 189,
7/21 = 7 × 9/21 × 9 = 63/189 - Add the two like fractions:
49/189 + 63/189 = 49 + 63/189 = 112/189 - 112/189 simplified gives 16/27
- So, 7/27 + 7/21 = 16/27
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