Add 18/3 and 21/15
1st number: 6 0/3, 2nd number: 1 6/15
18/3 + 21/15 is 37/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 15 is 15
Next, find the equivalent fraction of both fractional numbers with denominator 15 - For the 1st fraction, since 3 × 5 = 15,
18/3 = 18 × 5/3 × 5 = 90/15 - Likewise, for the 2nd fraction, since 15 × 1 = 15,
21/15 = 21 × 1/15 × 1 = 21/15 - Add the two like fractions:
90/15 + 21/15 = 90 + 21/15 = 111/15 - 111/15 simplified gives 37/5
- So, 18/3 + 21/15 = 37/5
In mixed form: 72/5
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