Add 72/84 and 90/54
1st number: 72/84, 2nd number: 1 36/54
72/84 + 90/54 is 53/21.
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,
72/84 = 72 × 9/84 × 9 = 648/756 - Likewise, for the 2nd fraction, since 54 × 14 = 756,
90/54 = 90 × 14/54 × 14 = 1260/756 - Add the two like fractions:
648/756 + 1260/756 = 648 + 1260/756 = 1908/756 - 1908/756 simplified gives 53/21
- So, 72/84 + 90/54 = 53/21
In mixed form: 211/21
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