Add 12/84 and 72/54
1st number: 12/84, 2nd number: 1 18/54
12/84 + 72/54 is 31/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 54 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 84 × 9 = 756,
12/84 = 12 × 9/84 × 9 = 108/756 - Likewise, for the 2nd fraction, since 54 × 14 = 756,
72/54 = 72 × 14/54 × 14 = 1008/756 - Add the two like fractions:
108/756 + 1008/756 = 108 + 1008/756 = 1116/756 - 1116/756 simplified gives 31/21
- So, 12/84 + 72/54 = 31/21
In mixed form: 110/21
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