Add 72/15 and 84/7
1st number: 4 12/15, 2nd number: 12 0/7
72/15 + 84/7 is 84/5.
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,
72/15 = 72 × 7/15 × 7 = 504/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
84/7 = 84 × 15/7 × 15 = 1260/105 - Add the two like fractions:
504/105 + 1260/105 = 504 + 1260/105 = 1764/105 - 1764/105 simplified gives 84/5
- So, 72/15 + 84/7 = 84/5
In mixed form: 164/5
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