Add 72/84 and 84/45
1st number: 72/84, 2nd number: 1 39/45
72/84 + 84/45 is 286/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
72/84 = 72 × 15/84 × 15 = 1080/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
84/45 = 84 × 28/45 × 28 = 2352/1260 - Add the two like fractions:
1080/1260 + 2352/1260 = 1080 + 2352/1260 = 3432/1260 - 3432/1260 simplified gives 286/105
- So, 72/84 + 84/45 = 286/105
In mixed form: 276/105
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