Add 18/27 and 18/21
18/27 + 18/21 is 32/21.
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,
18/27 = 18 × 7/27 × 7 = 126/189 - Likewise, for the 2nd fraction, since 21 × 9 = 189,
18/21 = 18 × 9/21 × 9 = 162/189 - Add the two like fractions:
126/189 + 162/189 = 126 + 162/189 = 288/189 - 288/189 simplified gives 32/21
- So, 18/27 + 18/21 = 32/21
In mixed form: 111/21
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