Add 30/18 and 18/15
1st number: 1 12/18, 2nd number: 1 3/15
30/18 + 18/15 is 43/15.
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,
30/18 = 30 × 5/18 × 5 = 150/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
18/15 = 18 × 6/15 × 6 = 108/90 - Add the two like fractions:
150/90 + 108/90 = 150 + 108/90 = 258/90 - 258/90 simplified gives 43/15
- So, 30/18 + 18/15 = 43/15
In mixed form: 213/15
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