Add 15/27 and 5/21
15/27 + 5/21 is 50/63.
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,
15/27 = 15 × 7/27 × 7 = 105/189 - Likewise, for the 2nd fraction, since 21 × 9 = 189,
5/21 = 5 × 9/21 × 9 = 45/189 - Add the two like fractions:
105/189 + 45/189 = 105 + 45/189 = 150/189 - 150/189 simplified gives 50/63
- So, 15/27 + 5/21 = 50/63
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