Add 18/10 and 21/15
1st number: 1 8/10, 2nd number: 1 6/15
18/10 + 21/15 is 16/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
18/10 = 18 × 3/10 × 3 = 54/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
21/15 = 21 × 2/15 × 2 = 42/30 - Add the two like fractions:
54/30 + 42/30 = 54 + 42/30 = 96/30 - 96/30 simplified gives 16/5
- So, 18/10 + 21/15 = 16/5
In mixed form: 31/5
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