Add 20/7 and 72/27
1st number: 2 6/7, 2nd number: 2 18/27
20/7 + 72/27 is 116/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 7 × 27 = 189,
20/7 = 20 × 27/7 × 27 = 540/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
72/27 = 72 × 7/27 × 7 = 504/189 - Add the two like fractions:
540/189 + 504/189 = 540 + 504/189 = 1044/189 - 1044/189 simplified gives 116/21
- So, 20/7 + 72/27 = 116/21
In mixed form: 511/21
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