Add 81/36 and 42/70
1st number: 2 9/36, 2nd number: 42/70
81/36 + 42/70 is 57/20.
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,
42/70 = 42 × 18/70 × 18 = 756/1260 - Add the two like fractions:
2835/1260 + 756/1260 = 2835 + 756/1260 = 3591/1260 - 3591/1260 simplified gives 57/20
- So, 81/36 + 42/70 = 57/20
In mixed form: 217/20
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