Add 18/12 and 20/15
1st number: 1 6/12, 2nd number: 1 5/15
18/12 + 20/15 is 17/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
18/12 = 18 × 5/12 × 5 = 90/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
20/15 = 20 × 4/15 × 4 = 80/60 - Add the two like fractions:
90/60 + 80/60 = 90 + 80/60 = 170/60 - 170/60 simplified gives 17/6
- So, 18/12 + 20/15 = 17/6
In mixed form: 25/6
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