Add 81/15 and 84/7
1st number: 5 6/15, 2nd number: 12 0/7
81/15 + 84/7 is 87/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
81/15 = 81 × 7/15 × 7 = 567/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
84/7 = 84 × 15/7 × 15 = 1260/105 - Add the two like fractions:
567/105 + 1260/105 = 567 + 1260/105 = 1827/105 - 1827/105 simplified gives 87/5
- So, 81/15 + 84/7 = 87/5
In mixed form: 172/5
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