Add 81/18 and 70/15
1st number: 4 9/18, 2nd number: 4 10/15
81/18 + 70/15 is 55/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
81/18 = 81 × 5/18 × 5 = 405/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
70/15 = 70 × 6/15 × 6 = 420/90 - Add the two like fractions:
405/90 + 420/90 = 405 + 420/90 = 825/90 - 825/90 simplified gives 55/6
- So, 81/18 + 70/15 = 55/6
In mixed form: 91/6
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