Add 30/15 and 21/18
1st number: 2 0/15, 2nd number: 1 3/18
30/15 + 21/18 is 19/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
30/15 = 30 × 6/15 × 6 = 180/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
21/18 = 21 × 5/18 × 5 = 105/90 - Add the two like fractions:
180/90 + 105/90 = 180 + 105/90 = 285/90 - 285/90 simplified gives 19/6
- So, 30/15 + 21/18 = 19/6
In mixed form: 31/6
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