Add 81/36 and 15/70
1st number: 2 9/36, 2nd number: 15/70
81/36 + 15/70 is 69/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 70 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 36 × 35 = 1260,
81/36 = 81 × 35/36 × 35 = 2835/1260 - Likewise, for the 2nd fraction, since 70 × 18 = 1260,
15/70 = 15 × 18/70 × 18 = 270/1260 - Add the two like fractions:
2835/1260 + 270/1260 = 2835 + 270/1260 = 3105/1260 - 3105/1260 simplified gives 69/28
- So, 81/36 + 15/70 = 69/28
In mixed form: 213/28
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