Add 21/27 and 84/7
1st number: 21/27, 2nd number: 12 0/7
21/27 + 84/7 is 115/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 7 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
21/27 = 21 × 7/27 × 7 = 147/189 - Likewise, for the 2nd fraction, since 7 × 27 = 189,
84/7 = 84 × 27/7 × 27 = 2268/189 - Add the two like fractions:
147/189 + 2268/189 = 147 + 2268/189 = 2415/189 - 2415/189 simplified gives 115/9
- So, 21/27 + 84/7 = 115/9
In mixed form: 127/9
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